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*  Methylidynephosphane
P carbon-phosphorus triple bond. Methylidynephosphane is the phosphorus analogue of hydrogen cyanide, with the nitrile nitrogen ... Chemie 62:443-467 Philip P. Power (1999) π-Bonding and the Lone Pair Effect in Multiple Bonds between Heavier Main Group ... substituted for the hydrogen atom, are much more stable, and are useful reagents for the synthesis of various organophosphorus ...
*  Homonuclear molecule
Noble gases rarely form bonds, so they only have one atom. The most familiar homonuclear molecules are diatomic, meaning they ... Homonuclear diatomic molecules include hydrogen (H2), oxygen (O2), nitrogen (N2) and all of the halogens. Ozone (O3) is a ...
*  Pseudohalogen
The presence of the internal double bonds or triple bonds do not appear to affect their chemical behavior. For example, they ... Pseudohalides are the univalent anions (or functional groups) which form hydracids with hydrogen and form insoluble salts with ... This is due to the effects of metallic bonding on small scales. IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold ... such as hydrogen cyanide; as ligands in coordination complexes, such as ferricyanide; and as functional groups in organic ...
*  Dimethyl trisulfide
DMTS can be synthesized by the reaction of methanethiol with hydrogen sulfide (in the presence of copper (II)) and with sulfur ... The reactivity of DMTS is related to its weak sulfur-sulfur bond (ca. 45 kcal/mol). Dimethyl tetrasulfide, which is thermally ... Mustapha Nedjma; Norbert Hoffmann (1996). "Hydrogen Sulfide Reactivity with Thiols in the Presence of Copper(II) in ... more reactive than dimethyl trisulfide, has a still weaker (central) sulfur-sulfur bond (ca. 36 kcal/mol). Oxidation of DMTS by ...
*  Dhurrin
Upon hydrolysis of the glycosidic bond, the aglycone of dhurrin rapidly degrades to form hydrogen cyanide which is then ... Lethal dosage of dhurrin in humans and other mammals is theoretically high as one molecule of hydrogen cyanide is produced per ... Discovered in multiple sorghum varieties in 1906 as the culprit of cattle poisoning by hydrogen cyanide, dhurrin is most ... Mammalian intestines contain multiple glucosidases which efficiently hydrolyze glycosidic bonds. ...
*  Nitrile
The C−N distance is short at 1.16 Å, consistent with a triple bond. Nitriles are polar, as indicated by high dipole moments. As ... The first compound of the homolog row of nitriles, the nitrile of formic acid, hydrogen cyanide was first synthesized by C. W. ... In this case, one C-N bond is cleaved. The dehydration of aldoximes (RCH=NOH) also affords nitriles. Typical reagents for this ... He determined the structure by comparing his results to the already known synthesis of hydrogen cyanide by heating ammonium ...
*  Hydrogen bond
Such hydrogen bonds are often denoted to as improper hydrogen bonds. Blue-shifting hydrogen bonds are typically observed for ... For most hydrogen bonds, the X-H bond length of the donor increases upon hydrogen bond formation and the X-H stretching ... The ideal bond angle depends on the nature of the hydrogen bond donor. The following hydrogen bond angles between a ... Some NMR data on hydrogen bonds in proteins also indicate covalent bonding. Most generally, the hydrogen bond can be viewed as ...
*  Hydrogen-bond catalysis
... is a type of organocatalysis that relies on use of hydrogen bonding interactions to accelerate and ... Link Asymmetric Hydrogen Bond Catalysis. MacMillan Group Meeting Presentation by Anthony Mastracchio. Link Hydrogen Bonding in ... Organocatalysis Thiourea organocatalysis Hydrogen bond Hydrogen Bond Catalysis. Evans Group Meeting Presentation by Peter H. ... It is often difficult to distinguish between hydrogen-bond catalysis and general acid catalysis. Hydrogen-bond donors can have ...
*  Symmetric hydrogen bond
This type of bond is much stronger than "normal" hydrogen bonds, in fact, its strength is comparable to a covalent bond. It is ... A symmetric hydrogen bond is a special type of hydrogen bond in which the proton is spaced exactly halfway between two ... Because of this problem, some consider it to be an ionic bond. Steiner, Thomas (2002). "The Hydrogen Bond in the Solid State". ... It is also seen in the bifluoride ion [F−H−F]−. Much has been done to explain the symmetric hydrogen bond quantum-mechanically ...
*  Carbon-hydrogen bond
The carbon-hydrogen bond (C-H bond) is a bond between carbon and hydrogen atoms that can be found in many organic compounds. ... Carbon-hydrogen bonds have a bond length of about 1.09 Å (1.09 × 10−10 m) and a bond energy of about 413 kJ/mol (see table ... This bond is a covalent bond meaning that carbon shares its outer valence electrons with up to four hydrogens. This completes ... In structural formulas of molecules, the hydrogen atoms are often omitted. Compound classes consisting solely of C-H bonds and ...
*  Low-barrier hydrogen bond
... strong hydrogen bonds. Standard hydrogen bonds are longer (e.g. 2.8 Å for an O···O h-bond), and the hydrogen ion clearly ... the bond is characterized as a single-well or short-strong hydrogen bond. Low barrier hydrogen bonds occur in the water- ... A Low-barrier hydrogen bond (LBHB) is a special type of hydrogen bond. LBHBs can occur when the pKa of the two heteroatoms are ... Low-barrier hydrogen bonds have been proposed to be relevant to enzyme catalysis in two types of circumstance. Firstly, a low- ...
*  Resonance-assisted hydrogen bond
The resonance assisted hydrogen bond (commonly abbreviated as RAHB) is a strong type of hydrogen bond. It is caused by the π- ... This description of the hydrogen bond has been proposed to describe unusually short distances generally observed between O=C-OH ... delocalization that involves the hydrogen and cannot be properly described by the electrostatic model alone. ... http://www.ggilli.com/files/2010_SYNGENTA_STEIN_CH_LECTURE_FUNCTIONAL_H-BOND.ppt. ...
*  Carbon-hydrogen bond activation
Carbon-hydrogen bond functionalization (C-H functionalization) is a type of reaction in which a carbon-hydrogen bond is cleaved ... the target hydrocarbon bond breaks as the carbon bonds to the metal and the hydrogen bonds to one of the metal's ligands, which ... A similar system uses pyridine to acetoxylate the C-H bond, forming a C-OAc bond, instead of a C-X halogen bond. The mechanism ... in which a metal center inserts into a carbon-hydrogen bond, which cleaves the bond and oxidizes the metal, producing an ...
*  DSSP (hydrogen bond estimation algorithm)
A hydrogen bond is identified if E in the following equation is less than -0.5 kcal/mol: E = 0.084 { 1 r O N + 1 r C H − 1 r O ... The 310 helix, α helix and π helix have symbols G, H and I and are recognized by having a repetitive sequence of hydrogen bonds ... Two types of beta sheet structures exist; a beta bridge has symbol B while longer sets of hydrogen bonds and beta bulges have ... DSSP begins by identifying the intra-backbone hydrogen bonds of the protein using a purely electrostatic definition, assuming ...
*  Tetraethylammonium chloride
K. M. Harmon, J. M. Gabriele and J. Harmon (1990). "Hydrogen bonding Part 30. New IR spectra-structure correlations for ... K. M. Harmon and J. M. Gabriele (1981). "Hydrogen bonding. 11. Infrared study of the water-chloride ion cluster in ... Reaction of tetraethylammonium hydroxide and hydrogen chloride. TEAC exists as either of two stable hydrates, the monohydrate ...
*  Chemical compound
Hydrogen bonding occurs when a hydrogen atom bonded to an electronegative atom forms an electrostatic connection with another ... "Hydrogen Bonds". chemistry.elmhurst.edu. Archived from the original on 2016-11-19. Retrieved 2017-10-28. "Hydrogen Bonding". ... "intermolecular bonding - hydrogen bonds". www.chemguide.co.uk. Archived from the original on 2016-12-19. Retrieved 2017-10-28. ... Opposite to covalent bonding, this chemical bond creates two oppositely charged ions. The metals in ionic bonding usually lose ...
*  Compounds of oxygen
1 per hydrogen atom) to an adjacent oxygen atom in a separate molecule. These hydrogen bonds between water molecules hold them ... "Water Hydrogen Bonding". Retrieved 2008-01-06. Also, since oxygen has a higher electronegativity than hydrogen, the charge ... Hydrogen atoms are covalently bonded to oxygen in a water molecule but also have an additional attraction (about 23.3 kJ·mol− ... Hydrogen peroxide (H 2O 2) can be produced by passing a volume of 96% to 98% hydrogen and 2 to 4% oxygen through an electric ...
*  Oxygen
1 per hydrogen atom) to an adjacent oxygen atom in a separate molecule. These hydrogen bonds between water molecules hold them ... O2 has a bond length of 121 pm and a bond energy of 498 kJ·mol−1, which is smaller than the energy of other double bonds or ... is an oxide of hydrogen and the most familiar oxygen compound. Hydrogen atoms are covalently bonded to oxygen in a water ... The bond can be variously described based on level of theory, but is reasonably and simply described as a covalent double bond ...
*  Bovine submaxillary mucin coatings
In addition, structural rearrangements of proteins as well as hydrogen bonding are suggested to influence the adsorption.The ... Mucins adhere well to polymeric surfaces through various types of bonding: (1) covalent bond attachment (2) electrostatic ... hydrogen bonding; and (4) hydrophobic interactions . These interactions require very close contact between the surface and the ... can be explained by the high amount of protonated amino groups that are present at the pH 4 level that form electrostatic bonds ...
*  Chemical force microscopy
Emsley (1980). "Very strong hydrogen bonding". J. Chem. Soc. Rev. 9: 91. doi:10.1039/cs9800900091. Zlatanova, J.; Lindsay, S. M ... Hydrophobicity is used as the primary example throughout this consideration of CFM, but certainly any type of bonding can be ... bonding, and a combination being the weakest. Probe tips are functionalized and substrates patterned with these molecules. All ... hydrogen, ozone/oxygen, and amines). Multiwall nanotubes are typically used for their rigidity. Because of their approximately ...
*  Thiocarboxylic acid
Collective Volume, 4, p. 924 M. R. Crampton (1974). "Acidity and hydrogen-bonding". In Saul Patai. The Chemistry of the Thiol ... 21: Three Carbon-Heteroatom Bonds: Amides and Derivatives; Peptides; Lactams. Georg Thieme Verlag. 2005. pp. 52-54. ISBN ...
*  Dithiobenzoic acid
M. R. Crampton (1974). "Acidity and hydrogen-bonding". In Saul Patai. The Chemistry of the Thiol Group. Chichester: John Wiley ...
*  Hydrogenoxalate
Hydrogen bond studies. XXXXVI. The Journal of chemical physics pp. 234-238. R. G. Delaplane, R. Tellgren and I. Olovsson (1984 ... Hydrogenoxalate or hydrogen oxalate is an anion with chemical formula HC2O4− or HO2C-CO2−, derived from oxalic acid by the loss ... Bicarbonate Roland Tellgren and Ivar Olovsson (1971) The crystal structures of normal and deuterated sodium hydrogen oxalate ... Neutron diffraction study of sodium hydrogen oxalate monohydrate, NaHC2O4·H2O, at 120 K. Acta Crystallographica, volume C40, ...
*  CHARMM
Reiher, III WH (1985). "Theoretical studies of hydrogen bonding". PhD Thesis at Harvard University. MacKerell AD Jr; et al. ( ... adding hydrogens, changing secondary structure). The calculation section can include energy minimization, dynamics production, ...
*  Force field (chemistry)
... hydrogen bond and the calibration of empirical hydrogen-bond potentials". J. Phys. Chem. 98 4831-4837. Hill, Terrell L. (1946 ... bonded = E bond + E angle + E dihedral {\displaystyle \ E_{\text{bonded}}=E_{\text{bond}}+E_{\text{angle}}+E_{\text{dihedral ... such as angles and bond lengths. Some force fields also include explicit terms for hydrogen bonds. The nonbonded terms are most ... and equilibrium values of bond lengths, bond angles, and dihedral angles for pairs, triplets, and quadruplets of bonded atoms, ...
*  Sulfide
... bond. The disulfide bond (-S-S-) plays a major role in the conformation of proteins and in the catalytic activity of enzymes. ... "Hydrogen sulfide" is itself an example of a non-systematic name of this nature. However, it is also a trivial name, and the ... Hydrogen sulfide, some of its salts, and almost all organic sulfides have a strong and putrid stench; rotting biomass releases ... In fact, the bonding in transition metal sulfides is highly covalent, which gives rise to their semiconductor properties, which ...
*  1,3-Dipolar cycloaddition
McGarrity, J.F.; Patai, Saul (1978). "Basicity, acidity and hydrogen bonding". Diazonium and Diazo Groups. 1: 179-230. doi: ... BOND]H Bond Insertion Adv Synth Catal 2003, 345, 1159. Nakamura, E.; Yoshikai, N.; Yamanaka, M. Mechanism of C−H Bond ... 5-hydroxy-4-pyrones can also be used to synthesize carbonyl ylides via an intramolecular hydrogen transfer. After hydrogen ... C-diapolarophiles due to a lower gain in sigma bond energy to offset the loss of a pi bond during the transition state. ...