Atom coordination complexes. Medical search. Frequent questions

Plus, when functional groups are more electronegative than atoms they attach to, the functional groups will become polar, and the otherwise nonpolar molecules containing these functional groups become polar and so become soluble in some aqueous environment. (wikipedia.org)
A complex ion consists of a central transition metal ion surrounded by species (atoms, molecules or ions), called ligands, which are bonded to the central metal ion by dative coordinate bonds. (ibchem.com)
In the complex ion at the left there are six water molecules bonded to the central cobalt ion in an octahedral arrangement. (ibchem.com)
The attached ions or molecules donate an electron pair to form a covalent bond to this central atom. (ibchem.com)
In aqueous solution the vast excess of water molecules means that the most common transition metal complex is the hexaaqua complex ion. (ibchem.com)
The six water molecules bond to the central cobalt ion using a lone pair on the oxygen atom. (ibchem.com)
There are six water molecules, so the coordination number is 6. (ibchem.com)
The two ammonia molecules bond to the central silver ion using a lone pair on the nitrogen atom. (ibchem.com)
There are two nitrogen molecules, so the coordination number is 2. (ibchem.com)
The apex of the pyramid is formed by the O(3 iv ) atom, provided by two complex molecules, thus joined to form a dimer [Cu(salalgly)(tu)] 2 . (cas.cz)
A. Coordination compounds are those that contain complicated ions and have a core metal atom or ion that is linked by coordinate bonds to a number of ions or neutral molecules. (extramarks.com)
Therefore, the ion centers act as active sites of the metallo-gallate complex that can donate electrons from the gallate ligands to ambient free oxygen molecules for the oxygen reduction and reactive oxygen species (ROS) generation 3 , after which the ligand field around iron center attenuates due to the electron loss from gallate 12 . (nature.com)
The lone pairs from six water molecules form bonds to the scandium ion to form an octahedral complex. (bccampus.ca)
The ions or molecules that bind to transition-metal ions to create these complexes are known as ligands (from Latin, to tie or bind). (ihelptostudy.com)
Cis-trans isomerism, also known as geometric isomerism or configurational isomerism, is a term used in chemistry that concerns the spatial arrangement of atoms within molecules. (definitions.net)
Cis and trans isomers occur both in organic molecules and in inorganic coordination complexes. (definitions.net)
The project is an example of how modern quantum mechanical methods can be used to study both ground and excited state properties in rather large and complex molecules. (lu.se)
Four ITPR1 protein molecules join together in a complex (a homotetramer) to form the channel. (medlineplus.gov)
Special emphasis is placed on an unbroken line of understanding - from a quantum mechanical description of atoms and molecules to complex supramolecular structures and their industrial and biological applications. (lu.se)
With these techniques we have successfully traced the electron transfer in complex molecules like the shown Ruthenium - Platinum complex with very high time-resolution. (lu.se)

Complexes are compounds, or ions, in which an atom (or ion) is surrounded by other species making a larger particle. (ibchem.com)
Parkin, 2007 ) to define 2-center metal-ligand interactions of organometallic compounds as ML l X x Z z , where the ligand atoms are classified as L, X, and Z ligands ( Figure 1A ). (frontiersin.org)
Class 12 Chapter 9 Coordination Compounds discusses the various transition metal compounds. (extramarks.com)
Some of the topics covered here include naming coordination compounds in the IUPAC system and determining the corresponding chemical formulas when given an IUPAC name. (extramarks.com)
The Important Questions for Class 12 Chemistry Chapter 9 Coordination Compounds presented here assist students in learning about "coordination compounds" and comprehending the concepts associated with them. (extramarks.com)
The development of ligand-field theory in quantum chemistry has provided useful tools for exploring the metal-ligand cooperativity in coordination compounds as well as the related redox processes 5 , 6 , 7 . (nature.com)
The hemoglobin in your blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. (bccampus.ca)
Remember that in most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. (bccampus.ca)
It is stated that the studied coordination compounds render both activating and inhibiting effect on enzyme activity, depending on composition, structure, charge of complex, coordination number of complex former and also on the enzyme and strain producer. (ukrbiochemjournal.org)

This is because the atoms of these elements and their stable ions contain electrons that completely fill the d orbitals. (newworldencyclopedia.org)
Oxidation is the process where atoms lose electrons during a chemical reaction. (phys.org)
Ligands are classified in many ways: their charge, their size (bulk), the identity of the coordinating atom(s), and the number of electrons donated to the metal (denticity or hapticity). (phys.org)
It is the number of pairs of electrons that coordinate to the transition metal atom. (ibchem.com)
For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH 4 . (bccampus.ca)
Most often, this involves a donor atom with a lone pair of electrons that can form a coordinate bond to the metal. (bccampus.ca)
Figure 4.3.2 - (a) Covalent bonds involve the sharing of electrons, and ionic bonds involve the transferring of electrons associated with each bonding atom, as indicated by the colored electrons. (bccampus.ca)
Atomistic and first-principles modeling, which describe the world as assembly of atoms and electrons, provide the most fundamental answer to problems of materials. (aps.org)
Some atoms form ions by removing valence electrons from their outermost electron shells. (pediaa.com)
Monatomic ions are formed by either losing or gaining electrons in the outermost shell of an atom. (pediaa.com)
Oxidation number and valency are related to the valence electrons of an atom. (pediaa.com)
Valence electrons are the electrons that occupy the outermost shells or orbitals of an atom. (pediaa.com)
As these electrons are weakly attracted to the nucleus, they can easily be lost or shared with other atoms. (pediaa.com)
This loss, gain or sharing of electrons cause a particular atom to have an oxidation number and valency. (pediaa.com)
This is because the two atoms in the coordination bonds share a pair of electrons, just like a covalent bond. (pediaa.com)
Valency is the maximum number of electrons that an atom can lose, gain or share in order to become stabilized. (pediaa.com)
It says that, if the number of the outermost shell of an atom is completely filled with eight electrons, that configuration is stable. (pediaa.com)
The maximum number of electrons involved in this stabilization process is called the valency of that atom. (pediaa.com)
Since the silicon atom should share 4 electrons in order to get stabilized, the valency of silicon is 4. (pediaa.com)

Schiff base ligands with a variety of donor atoms including nitrogen, oxygen and sulfur can be coordinated with transition metal atoms. (springer.com)
Measurements of the free energy change associated with axial ligand exchange in a cationic europium tetraamide complex, [Eu(DOTAMPh)](CF3SO3)3 supported by a simple electrostatic perturbation model, have been interpreted in terms of a predominant donor atom polarisation model which affords a simple assessment of Ln ion donor atom preference and ranks the axial second-order ligand field coefficient. (open.ac.uk)
A variety of stretchable polymers with different mechanical features can be created by varying the type and oxidation state of the metal center, and the class and denticity, i.e., number of donor groups in a single ligand that bind to a central atom in a coordination complex, of the coordinating ligands. (stanford.edu)
The coordination number of the central metal ion or atom is the number of donor atoms bonded to it. (bccampus.ca)
In the title mononuclear copper(II) complex, [Cu(C 7 H 5 ClNO) 2 ], the Cu atom, situated on an inversion center, is four-coordinated, in a slightly distorted square-planar geometry, by the N- and O-donor atoms of two symmetry-related 4-chloro-2-(imino-meth-yl)phenolate Schiff base ligands. (iucr.org)
The Cu II atom lies on an inversion center and is four-coordinated in a square-planar geometry by the N-and O-donor atoms of two Schiff base ligands. (iucr.org)
Thermodynamic and spectroscopic evidence is given that the side chain oxygen donor atom of glutamyl residue in Ac-PHSEN-NH2 is also involved in the binding up to physiological pH. (cnr.it)

We are investigating novel iron-carbene complexes for solar light sensitization, light activated catalysts, novel polymer structures combining light sensitization and catalytic properties and novel nano dots for light sensitization and catalysis. (lu.se)

[3] In the formulas, the symbols R and R' usually denote an attached hydrogen, or a hydrocarbon side chain of any length, but may sometimes refer to any group of atoms. (wikipedia.org)
A hydroxyl is a chemical group containing an oxygen atom covalently bonded with a hydrogen atom. (absoluteastronomy.com)
Alkanes, alkenes, and alkynes (and sometimes the derivatives of benzene) are represented by the symbol R. these groups are also referred to as hydrocarbyl groups since they contain only carbon and hydrogen atoms. (byjus.com)
To determine ligand exchange kinetic parameters after the imidazole nitrogen anchoring, proton relaxation enhancement NMR data have been collected for the two hydrogen atoms of the imidazole ring in the temperature range 293-315 K at pH 5.2 and globally treated within different kinetic models for ligand exchange. (cnr.it)

In this project, our efforts were directed to the synthesis and characterization of nickel(II) and zinc(II) complexes with tetradentate N 2 O 2 -Schiff base ligands based on diaminomaleonitrile and various aldehydes such as 2-hydroxybenzaldehyde, 3-methoxy-2-hydroxybenzaldehyde and 2-hydroxy-1-naphthaldehyde. (springer.com)

Metal nanoclusters are tiny, crystalline structures up to two nanometers (2 x 10-9 meters) in diameter that contain a few to hundreds of metal atoms. (phys.org)
This is made clearer by referring to the formulae and structures of some complexes. (ibchem.com)
The structures, properties, and reactivities of organometallic complexes depend mostly on their ligand environment. (frontiersin.org)
P(III) ligands, in either the monodentate form or a polydentate/hybrid form, have played a crucial role in the stabilization of elusive species and unusual structures within transition complexes, allowing for the isolation and/or detection of agostic complexes, σ-alkane adducts, non-heteroatom-stabilized alkylidenes, and low-coordinate unsaturated species, among others. (mdpi.com)
Dithiophosphinate and iminophosphonamide ligands form four-membered PtXPX metallacycles with coordination by either sulfur or nitrogen atoms (= X). The complexes are fully characterized, including two solid-state structures. (figshare.com)
2009). As a further study of the structures of such complexes, the crystal structure of the title mononuclear copper(II) complex is reported here. (iucr.org)

For repeating units of polymers , functional groups attach to their nonpolar core of carbon atoms and thus add chemical character to carbon chains. (wikipedia.org)
In the case of polymers, the functional groups are generally attached to the nonpolar core of the carbon atoms in each repeating unit of the corresponding polymer, infusing the carbon chain with specific chemical characteristics. (byjus.com)
However, they may vary in the types of bonds between two carbon atoms, such as double or triple bonds. (byjus.com)
It consists of one carbon atom covalently bonded to one oxygen atom. (wikidoc.org)
There are 2 covalent bonds and a coordinate covalent bond between the oxygen and carbon atoms. (wikidoc.org)
The result is a small dipole moment with its negative end on the carbon atom [3] . (wikidoc.org)
This is also the reason that almost all chemistry involving carbon monoxide occurs through the carbon atom, and not the oxygen. (wikidoc.org)
A valeric acid substituent is attached to one of the 2 carbon atoms of the tetrahydrothiophene ring. (medscape.com)
Biotin is a bicyclic (more precisely, heterocyclic) compound composed of an ureido ring (A) fused with a tetrahydrothiophene ring (B). A valeric acid substituent is attached to one of the carbon atoms of the tetrahydrothiophene ring. (medscape.com)

Silver nanocluster synthesis, or the binding of a silver atom to negatively charged anions, is often plagued by stability, sizing uniformity and surface composition issues. (phys.org)
The synthesis of cyclometalated NHC platinum-(II) complexes with two types of phosphorus-containing ligands is reported. (figshare.com)
Gölcü A. Transition metal complexes of propranolol dithiocarbamate: synthesis, characterization, analytical properties and biological activity. (ukrbiochemjournal.org)
Synthesis, characterization and antifungal activities of 3d-transition metal complexes of 1-acetylpiperazinyldithiocarbamate, M(acpdtc)2. (ukrbiochemjournal.org)

Ligands in a complex dictate the reactivity of the central atom, including ligand substitution rates, the reactivity of the ligands themselves, and redox. (phys.org)
The reactivity from the ammonia during these complexes continues to be drastically reduced. (ihelptostudy.com)

The compound forms a range of coordination complexes. (wikipedia.org)
It is the first example of a rhomboidal [Cu 4 ] compound formed from $\mu_{1,1}$-azido clipping of two methoxido bridged [Cu 2 ] complexes showing asymmetric coordination from benzophenone oxygen atoms and terminal azido groups. (ias.ac.in)
The term is almost exclusively taken to mean a compound or an ion of a transition metal in which the metal ion (or atom) itself is surrounded by other atoms or ions. (ibchem.com)
What exactly is a coordination compound? (extramarks.com)
A. The IUPAC name of the given coordination compound is diamine chlorido methylamine platinum (II) chloride. (extramarks.com)
Oxidation number is the charge of the central atom of a coordination compound if all the bonds around that atom were ionic bonds. (pediaa.com)
The structure of the title compound, showing the atom-numbering scheme and displacement ellipsoids drawn at the 30% probability level. (iucr.org)

The name of the metal atom and its oxidation state. (ibchem.com)
The absorption spectrum thus contains detailed information about the density of empty states and allows conclusions about coordination, oxidation state and many more information about the local structure. (lu.se)

For the copper(II) ion in [CuCl 4 ] 2− , the coordination number is four, whereas for the cobalt(II) ion in [Co(H 2 O) 6 ] 2+ the coordination number is six. (bccampus.ca)
In the complex [Co(en) 3 ] 3+ , there are three bidentate en ligands, and the coordination number of the cobalt(III) ion is six. (bccampus.ca)
A minimum of three different cobalt(III) complexes could be isolated when CoCl2 is dissolved in aqueous ammonia after which oxidized by air towards the +3 oxidation condition. (ihelptostudy.com)
In each one of the cobalt(III) complexes formerly described, three Cl - ions are necessary to fulfill the primary valence from the Co 3+ ion. (ihelptostudy.com)
Werner assumed the secondary valence from the transition metal during these cobalt(III) complexes is six. (ihelptostudy.com)
Based on his theory, the ligands in six-coordinate cobalt(III) complexes are oriented toward the corners of the octahedron, as proven within the figure below. (ihelptostudy.com)
6) molecular complexes of dithiocarbamates of cobalt (III) with iodine- - [Co(S 2 CNRR′) 3 ]∙2I 2 . (ukrbiochemjournal.org)
These groups (1-6) are combined by the presence of the same complexing agent (cobalt) and a fragment S 2 CNRR′ in their mole-cules. (ukrbiochemjournal.org)

The coordination sphere consists of the central metal ion or atom plus its attached ligands. (bccampus.ca)
species outside the brackets are not part of the coordination sphere. (bccampus.ca)
Investigated complexes differ by a charge of intrinsic coordination sphere: anionic (1-2), cationic (3) and neutral (4-6). (ukrbiochemjournal.org)
The results give no support to earlier suggestions that the protein strains the Cu(II) coordination sphere into a Cu(I) like structure. (lu.se)

1 H NMR spectra were measured on a Bruker AVANCE BRX 250 MHz spectrometer using d 6 -DMSO as solvent for the complexes. (springer.com)
In particular, solvent-free complexes of 1) gadopentetate dimeglumine and 2) gadoterate meglumine are disclosed and methods of their preparation are disclosed. (trea.com)
Ultimately, this multi-step process is responsible for solvent complexed impurities, shifts in pH and gadolinium-ligand balance. (trea.com)
The protein and the surrounding solvent was modeled by point charges, one for each atom. (lu.se)

Atoms in the polyatomic ion are covalently bonded to each other. (pediaa.com)

A functional group is a group of atoms in a molecule with distinctive chemical properties , regardless of the other atoms in the molecule. (wikipedia.org)
The atoms in a functional group are linked to each other and to the rest of the molecule by covalent bonds . (wikipedia.org)
Functional groups can also be charged , e.g. in carboxylate salts (-COO − ), which turns the molecule into a polyatomic ion or a complex ion . (wikipedia.org)
COO − ), which turns the molecule into a polyatomic ion or a complex ion . (wikipedia.org)
In coordination chemistry, a ligand is an ion or molecule (see also: functional group) that binds to a central metal atom to form a coordination complex. (phys.org)
Atomicity is the number of atoms present in a molecule or an ion. (pediaa.com)
The whole molecule of the complex is approximately coplanar with mean deviation from the least-squares plane of 0.021 (2) Å. (iucr.org)
Covalent bonding links the atoms of these groups and the group as a whole to the molecule. (byjus.com)
The presence of functional groups in a molecule also affects the solubility and the tendency to form complexes of the molecule in question. (byjus.com)
In the scenario wherein a highly electronegative functional group is attached to a less electronegative atom or molecule, a polarity arises which enables the initially nonpolar molecule to be soluble in water or other aqueous environments. (byjus.com)
In the first one, which is slow, a water molecule disengages a carbonyl or a carboxylate group coordinated to the metal ion in the complex formed by PHSFN or PHSEN, respectively. (cnr.it)
By investigating these atoms at different times after the structure was excited with light we can trace the development of electronic and structural changes even in very complex systems or in other words follow the electron through the molecule and over interfaces. (lu.se)

However, the oxidation number of the central metal atom is calculated considering the coordination bonds as ionic bonds. (pediaa.com)
Therefore, they can act as the central metal atom of coordination complexes. (pediaa.com)

Neutral or negatively charged ligands bonded to metal cations or neutral atoms. (lookformedical.com)

Mechanophores are dynamic areas in a polymer network that contain either adaptive covalent or weak non-covalent bonds, such as metal-ligand coordination bonds, that can dissipate mechanical stress under strain by breaking and reforming. (stanford.edu)
Polyatomic ions are formed by bonding several atoms together via covalent bonds or coordinate covalent bonds. (pediaa.com)

This parameter has been measured directly, by analysing the europium emission spectra for a series of eight- and nine-coordinate axially symmetric complexes based on cyclen including aza-carboxylate ligands (e.g. (open.ac.uk)
The shape of a four-coordinate complex is usually tetrahedral, although in some (rare) cases square planar complexes form. (ibchem.com)
Many other ligands coordinate to the metal in more complex fashions. (bccampus.ca)
Bidentate ligands are those in which two atoms coordinate to the metal center. (bccampus.ca)
Both of the atoms can coordinate to a single metal center. (bccampus.ca)

The number of ligand atoms to which the metal center is directly bonded is the metal cation's coordination number, and this number is always greater than the regular valence or oxidation number of the metal. (lookformedical.com)

The copper atom has four chloride ligands bonded to the central atom. (ibchem.com)

The geometries of the Ni(II) and Zn(II) complexes were square planar and square pyramidal, respectively. (springer.com)
The Cu(II) coordination in this complex is approximately square-pyramidal. (cas.cz)

Although this definition is still widely used, the characteristic properties of transition metals arise because of the electron configuration of their atoms, which have partially filled " d orbitals. (newworldencyclopedia.org)
Naturally, noble gas atoms have this electron configuration. (pediaa.com)

The International Union of Pure and Applied Chemistry (IUPAC) defines a transition element as "an element whose atom has an incomplete d sub-shell, or which can give rise to cations with an incomplete d sub-shell. (newworldencyclopedia.org)

Finally, in the fourth article, we talk about the salts of μ-nitrido-bis (phosphangulene), an organic cation where two phosphangulene units are bridged by a nitrogen atom, as well as the crystals resulting from the combination of this bridging ligand and C60. (umontreal.ca)

Coordination Chemistry Reviews. (wikipedia.org)

Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. (jove.com)
Which of the following complexes cannot have geometric isomers? (pearson.com)

Phosphines and related P(III) ligands constitute one of the most-used classes of ligands in coordination and organometallic chemistry and have great potential for application in homogeneous catalysis. (mdpi.com)

In Bleaney's theory of magnetic anisotropy, the second-order crystal field coefficient, Bo2, is predicted to determine the dipolar NMR shift of paramagnetic lanthanide complexes in solution. (open.ac.uk)
Extension of previous work on the lanthanide(III) ion complexes of p-tert -butyltetrathiacalix[4]arene has led to a variety of structurally characterised species containing oxo-, hydroxo- and aqua-ligands presumably derived from water present in the preparative medium, along with the thiacalixarene in various stages of deprotonation. (edu.au)

The complex [Fe(NH 3 ) 5 OCN] 2+ has two isomers. (pearson.com)

The Master's program in Chemistry with a focus on Synthetic and Analytical Chemistry (SAKE) consists of 120 credits and offers you an opportunity to acquire advanced theoretical and practical knowledge and skills in analytical, organic, and organometallic chemistry, as well as coordination chemistry. (lu.se)

The complex crystallizes in the monoclinic system, space group P2 1 /𝑐, with unit cell parameters a = 14.620(7) Å, b = 17.923(8) Å, c = 15.008(7) Å, 𝛽 = 115.815(14)° and Z = 2. (ias.ac.in)

We discovered that the molecular ordering of semiconducting polymers can be effectively manipulated by the dynamic of metal-ligand coordination bonds, leading polymer semiconductors to be highly stretchable without sacrificing charge transporting," says Wu. (stanford.edu)
These ligands have lone electron pairs that can be shared with metal atoms to form coordination bonds. (pediaa.com)
In order to form coordination bonds, the metal atom should have empty orbitals. (pediaa.com)
A functional group is a group of atoms or bonds inside a substance that is responsible for the substance's unique chemical reactions in organic chemistry. (byjus.com)

In this chapter, we will introduce the recent advances of the tetradentate cyclometalated platinum(II) complexes, including pyrazole, N-heterocyclic carbene, imidazole and pyridine-based complexes, molecular design, photophysical properties, and some of their device performances. (intechopen.com)

their stability and ability to catalyse oxygen atom transfer (in particular the oxidation of sulfite) will be assessed and their suitability to bind in the active site pocket of the protein and restore activity will be tested. (europa.eu)

The next step should be to consider the molecular orbital scheme of an octahedral complex (although the d-orbitals alone carry all the necessary information so even the crystal field model can answer it). (stackexchange.com)
They give an example of how multiconfigurational SCF theory combined with multiconfigurational second-order perturbation theory can be used to study excited states of rather complex molecular systems. (lu.se)

Measurements from the conductivity of aqueous solutions of those complexes claim that the CoCl3 6 NH3 and CoCl3 5 NH3 H2 O complexes dissociate in water to provide as many as four ions. (ihelptostudy.com)
Disclosed herein are complexes of gadolinium metal, ligand and meglumine that are substantially free of non-aqueous solvents. (trea.com)
In addition, methods are disclosed for purifying reactants, monitoring and controlling pH, quantifying the free gadolinium content, quantifying the concentration of gadolinium-ligand complex in aqueous solution, and procedures for producing a drug product in one step. (trea.com)

A coordination complex can be negative, neutral, or positively charged. (lookformedical.com)
This gene provides instructions for making a protein that is part of a channel that controls the flow of positively charged calcium atoms (calcium ions) within cells. (medlineplus.gov)

G. N. Lewis was the first one to notice that the response from a transition-metal ion and ligands to create a coordination complex was similar towards the reaction between your H + and OH - ions to create water. (ihelptostudy.com)

In the complex ion at the left there are four chloride ions bonded to the central copper ion in an tetrahedral arrangement. (ibchem.com)
EDTA 2Na is an excellent complexing agent (chelating agent), which is mainly used to soften hard water and can effectively chelate a variety of metal ions (mainly calcium, magnesium, iron, copper, manganese, etc.) in hard water. (nanotrun.com)
Copper(ii) complexes with short peptides based on the second cell binding site of fibronectin, PHSFN and PHSEN, have been characterized by potentiometric, UV-vis, CD, EPR and NMR spectroscopic methods. (cnr.it)
The density functional B3LYP method was used to optimize the coordination structure around the copper ion. (lu.se)

Polyatomic ions are ions composed of several atoms per ion. (pediaa.com)
Sometimes, a polyatomic ion is formed as a coordination complex . (pediaa.com)
Monatomic ions and polyatomic ions are named according to the number of atoms present in those ions. (pediaa.com)
The main difference between monatomic and polyatomic ions is that monatomic ions are composed of single atoms whereas polyatomic ions are composed of two or more atoms per ion. (pediaa.com)

The geometries of these complexes are the same as we have seen with VSEPR theory for main group elements: linear, tetrahedral, and octahedral. (bccampus.ca)

Functional groups binding to a central atom in a coordination complex are called ligands . (wikipedia.org)

In order to strategically exploit them, we propose this summary of the different bonding modes for transition metal-carbocation complexes. (frontiersin.org)

But Noble gases never have monatomic ions since their atoms are very stable with a completed electronic configuration. (pediaa.com)
For metals and nonmetals , the octet rule describes the most stable form of an atom. (pediaa.com)

as a result, biotin is not liberated from food, and the biotin-avidin complex is lost in the feces. (medscape.com)
the biotin-avidin complex is not broken during passage of the food bolus through the stomach and intestines. (medscape.com)

As one of the most important phosphorescent emitters, tetradentate cyclometalated platinum(II) complexes have attracted much attention in recent years, because of the high luminescent efficiency, emission spectra, and color tuned easily, especially for the development of high-efficient deep-blue and "pure" blue emitters and single-doped white organic light-emitting diodes (OLEDs). (intechopen.com)

Transition metals form catalytic complexes that can speed up various chemical processes, especially in the production of pharmaceuticals as well as various pigments, dyes, and laboratory reagents like sulfuric acid. (phys.org)
Ions of the metals, especially the transition metals, are likely to form complexes. (bccampus.ca)
ions with empty d subshell ( d 0 ) or with filled d subshells ( d 10 ) usually form colorless complexes. (bccampus.ca)
Although coordination complexes are particularly significant within the chemistry from the transition metals, some primary group elements also form complexes. (ihelptostudy.com)

Chemicals and Drugs5

Technology, Industry, Agriculture1

Molecules20

Compounds9

Electrons19

Donor7

Iron Carbene Complexes1

Hydrogen4

Schiff1

Structures6

Carbon9

Synthesis4

Reactivity2

Compound7

Oxidation state2

Cobalt8

Sphere4

Solvent4

Covalently bonded1

Molecule12

Central metal atom2

Negatively charged1

Covalent bonds2

Coordinate5

Valence1

Ligands bonded1

Square pyramidal2

Electron configuration2

Cations1

Nitrogen Atom1

Chemistry Reviews1

Geometric2

Catalysis1

Lanthanide2

Isomers1

Organometallic chemistry1

Crystallizes in the monoclinic system1

Bonds4

Imidazole1

Oxygen atom1

Molecular2

Aqueous3

Positively charged2

Metal ion1

Copper4

Polyatomic4

Geometries1

Functional groups1

Bonding1

Stable2

Biotin-avidin complex2

Tetradentate1

Form4