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*  Crown ether - New World Encyclopedia
Crown ethers are heterocyclic chemical compounds that consist of a ring containing several ether groups. The most common crown ... Hydrogen-bonds are formed between the three hydrogen atoms of protonated amines and three oxygen atoms of 18-crown-6. These ... Structures of some common crown ethers. Structures of common crown ethers: 12-crown-4, 15-crown-5, 18-crown-6, dibenzo-18-crown ... Aza-crowns. "Aza-crowns" consist of crown ethers wherein an ether oxygen has been replaced by an amine group. A well-known ...
  http://www.newworldencyclopedia.org/entry/Crown_ether
*  Crystals | Free Full-Text | (B15c5)BiI3(I2): Molecular Benzo-15-Crown-5―BiI3 Complexes Bridged by Iodine Molecules to Chains |...
... be mainly electrostatic as the interactions of the bismuth 6s lone pair with the 2p orbitals of the oxygen atoms of the crown ... Electronic structure calculations of the neutral complex (b15c5)BiI3 reveal that the compound can indeed be described as b15c5 ... The reaction of bismuth triiodide with iodine and benzo-15-crown-5 in ethanol/dichloromethane yielded red single crystals of ( ... Iodine Molecules Included in the Structure of Dibenzo-24-Crown-8, (I2)@(db24c8) ...
  http://www.mdpi.com/2073-4352/1/4/220/notes
*  Technical Report: Crown Fabrication Without an Impression.
Macrocyclic compounds analogous to CROWN ETHERS but which lack any OXYGEN atoms. ... Intraoral Imaging at Clinical Crown Lengthening. Crown lengthening surgery is done when a tooth needs to be fixed with a crown ... Crown-rump Length. In utero measurement corresponding to the sitting height (crown to rump) of the fetus. Length is considered ... We report the synthesis of five novel crystals [(4-BrAni+)(DB[18]crown-6)]2[SMo12O402-]·2CH3CN (1), [(4-BrAni+)(B[18]crown-6)]2 ...
  https://www.bioportfolio.com/resources/pmarticle/2036331/Technical-Report-Crown-Fabrication-Without-an-Impression.html
*  US6232783B1 - Method for monitoring an aqueous flow using selective film - Google Patents
The selective film may include a molecularly imprinted polymer, a crown ether, an antibody selective for biological ... This high degree of selectivity enables the crown compound to "identify" the guest atom in a solution and wrap around it. In ... and oxygen atoms. Each oxygen atom is bound between two of the carbon atoms and arranged in a ring (hence "crown"). When atoms ... The crown compound then acts as "host," taking its "guest" to a place where it would not otherwise go-for instance, through the ...
  https://patents.google.com/patent/US6232783
*  Octasulfur - Wikipedia
The compound adopts a crown conformation with D4d point group symmetry. The S-S bond lengths are equal, at about 2.05 Å. ... It is also the final member of the thiocane heterocylic series, where every carbon is substituted with a sulfur atom. ... The compound is systematically named octathiocane, and cyclo-octasulfur. ...
  https://en.wikipedia.org/wiki/Octasulfur
*  Patent US5786441 - Polymers, elastomeric compounds and products thereof, derived from novel ... - Google Patents
R1 is selected from the group consisting of organic groups containing from 1 to about 12 carbon atoms and a bridging bond; each ... organic groups containing from 1 to about 12 carbon atoms, and a bridging bond; each R3 is independently selected from the ... the bridge having 0 to about 6 carbon atoms between the bridging ring members; said polymer having been crosslinked. Also ... group consisting of hydrogen and organic groups containing from 1 to about 12 carbon atoms; a is an integer from 4 to about 16 ...
  http://www.google.ca/patents/US5786441
*  Functionalized Derivatives of Benzo-Crown Ethers. Part 4. Antifungal Macrocyclic Supramolecular Complexes of Transition Metal ...
In the newly prepared complexes the crown moiety oxygen atoms of the macrocyclic host did not generally interact with metal ... Several of the newly synthesized compounds act as effective antifungal agents against Aspergillus and Candida spp., some of ... Poly- and mononuclear metal complexes of 2,3,11,12-bis[4-(10-aminodecylcarbonyl)]benzo-18- crown-6 (L) and Cu(II); Ni(II); Co( ... The mechanism of antifungal action of these coordination compounds is probably connected to an inhibition of lanosterol-. 14-. ...
  https://www.hindawi.com/journals/mbd/1999/802029/abs/
*  Solid state and solution studies of lithium tris( n -butyl)magnesiates stabilised by Lewis donors - Dalton Transactions (RSC...
... this motif has been known as an inverse crown compound.27c,41 All the n-butyl anions are bridging in the inverse crown ... Each Mg atom is bound solely to (four) C atoms, and each Li atom binds to two C atoms and their coordination sphere is ... While the tetrahedrally-disposed lithium atom is bridged to magnesium by one n-butyl chain in 5, sodium and potassium atoms are ... Compound 5, which crystallises in space group P21/c, is a dimer of [(TMEDA)·Li(OnBu)MgnBu2] units which bind through a Mg-O ...
  http://pubs.rsc.org/en/content/articlehtml/2015/dt/c5dt00435g?page=search
*  Barrelene - Wikipedia
This compound can be envisioned as a cubane with three oxygen atoms inserted into three opposite edges or as 9-crown-3 capped ... Triptycenes, with the alkene groups part of an arene, are related compounds. It is also a starting material for many other ... Barrelene is a bicyclic organic compound with chemical formula C8H8 and systematic name bicyclo[2.2.2]octa-2,5,7-triene. First ... Due to its unusual molecular geometry the compound is of considerable interest to theoretical chemists. ...
  https://en.wikipedia.org/wiki/Barrelene
*  PubMed Journals Articles About 'Crown Bioscience Announcing 2017 Board Directors Election Results'
Crown Bioscience Announcing 2017 Board Directors Election Results PubMed Journal Articles published on BioPortfolio , ... A Stable Crown Ether Complex with a Noble-Gas Compound.. Crown ethers have been known for over 50 years, but no example of a ... The crystal structure shows that the five oxygen atoms of the crown ether are coordinated to the xenon atom of XeO₃. The gas- ... crown-6 = benzo[18]-crown-6; DB[18]crown-6 = dibenzo[18]-crown-6; DB[30]crown-10 = dibenzo[30]-crown-10; 3-AP+ = 3- ...
  https://www.bioportfolio.com/resources/pubmed/?keyword=Crown+Bioscience+Announcing+2017+Board+Directors+Election+Results&orderfield=score&orderval=desc
*  Tetrahedrane - Wikipedia
In this compound one of the silicon atoms of the cage has lost a silyl substituent and carries a negative charge. The potassium ... cation can be captured by a crown ether and in the resulting complex potassium and the silyl anion are separated by a distance ... This compound (prepared from the corresponding cyclobutadiene) is far more stable than the tert-butyl analogue. The silicon- ... The tetrahedrane skeleton is made up of banana bonds, and hence the carbon atoms are high in s-orbital character. From NMR, sp- ...
  https://en.wikipedia.org/wiki/Tetrahedrane
*  Scorpionate ligand - Wikipedia
The tricarbonyl manganese complex of trithia-9-crown-3 has the three sulfur atoms binding to the metal atom in the same place ... with the compound hydrotris(pyrazolyl) borate Mn). By replacing the nitrogen donor of a Tp ligand atoms with sulfur atoms, a ... The Tp, Tm, trithia-9-crown-3 (a sulfur version of a small crown ether) and cyclopentadienyl (Cp) ligands related ligands and ... Many of the scorpionate ligands have a central boron atom which bears a total of four groups, but it is possible to create ...
  https://en.wikipedia.org/wiki/Scorpionate_ligand
*  EP2854798A4 - Compositions comprising isosilybin b for amelioration and prevention of drug- induced toxicity - Google...
A61K31/33-Heterocyclic compounds * A61K31/335-Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. ... fungichromin having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel ... A61K31/7052-Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides ... A61K31/7056-Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides ...
  https://patents.google.com/patent/EP2854798A4/en
*  1-(2-Nitrophenoxy)octane - Wikipedia
... is a chemical compound that is used as a matrix in fast atom bombardment mass spectrometry, liquid secondary ion mass ... Glycerol 3-Mercaptopropane-1,2-diol 3-Nitrobenzyl alcohol 18-Crown-6 Sulfolane Diethanolamine Triethanolamine. ...
  https://en.wikipedia.org/wiki/1-(2-Nitrophenoxy)octane
*  Crystals | Free Full-Text | (B15c5)BiI3(I2): Molecular Benzo-15-Crown-5―BiI3 Complexes Bridged by Iodine Molecules to Chains
... be mainly electrostatic as the interactions of the bismuth 6s lone pair with the 2p orbitals of the oxygen atoms of the crown ... Electronic structure calculations of the neutral complex (b15c5)BiI3 reveal that the compound can indeed be described as b15c5 ... The reaction of bismuth triiodide with iodine and benzo-15-crown-5 in ethanol/dichloromethane yielded red single crystals of ( ... Keywords: bismuth; iodine; crown ether; crystal structure; chemical bonding bismuth; iodine; crown ether; crystal structure; ...
  http://www.mdpi.com/2073-4352/1/4/220
*  Rhyming recipe - Wikipedia
Let onion's atoms lurk within the bowl And, scarce suspected, animate the whole, And lastly in the flavoured compound toss A ... Four times the spoon with oil of Lucca crown, And twice with vinegar procured from town; True taste requires it and your poet ...
  https://en.wikipedia.org/wiki/Rhyming_recipe
*  Neue Salze mit den Cluster-Komplex-Anionen [Mo6Cli8Xa6]2- (Xa = Cl, I) - Kölner UniversitätsPublikationsServer
The crown ethers and the solvents act as proton donators, while the chlorine atoms of the cluster complex anion [Mo6Cl14]2- as ... The compounds of the [Cat2+L6][{Mo6}Cl14] structure type can be described properly by the radius rule that predicts a ... Cat+(CE)]2[Mo6Cl14] and [Cat+(CE)2]2[Mo6Cl14] (Cat += alkali metal or hydronium ; CE = crown ether). The first class can be ... A study of the luminescent characteristics of these compounds shows that there is no influence of the cationic sub-lattice on ...
  http://kups.ub.uni-koeln.de/4209/
*  Patente US5519086 - Low-hysteresis elastomer compositions using amino-substituted aryllithium ... - Google Patentes
... alkyls having from alkyls having from 1 to about 12 carbon atoms; aralkyls having from 7 to about 20 carbon atoms; ... present invention include preparing functionalized polymers and reducing the hysteresis of vulcanizable elastomeric compounds. ... dialkylaminos having from 2 to about 20 carbon atoms; and, dialkylaminoalkyls having from 3 to about 20 carbon atoms. At least ... A vulcanizable elastomeric compound and products such as pneumatic tires and the like, are formed from a functionalized polymer ...
  http://www.google.es/patents/US5519086
*  Patente US5523371 - Functionalized polymer of improved hysteresis properties prepared using ... - Google Patentes
... alkyls having from alkyls having from 1 to about 12 carbon atoms; aralkyls having from 7 to about 20 carbon atoms; ... present invention include preparing functionalized polymers and reducing the hysteresis of vulcanizable elastomeric compounds. ... dialkylaminos having from 2 to about 20 carbon atoms; and, dialkylaminoalkyls having from 3 to about 20 carbon atoms. At least ... A vulcanizable elastomeric compound and products such as pneumatic tires and the like, are formed from a functionalized polymer ...
  http://www.google.es/patents/US5523371?hl=es&dq=flatulence
*  Patente US7645934 - Nanostructured layer and fabrication methods - Google Patentes
When used in an active layer, the nanostructured porous layer 100 may be made from an inorganic compound (e.g., a metal, an ... where X refers to the central element or inorganic network atom in the covalent metal complex:. [Surfactant]/[X]: a molar ratio ... crown ethers, hydroxyl or amine containing polymers, small molecules or cosolvents such as ethyl acetoacetate, 2-4-pentadione, ... Organic Materials Compounds, which principally consist of carbon and hydrogen, with or without oxygen, nitrogen or other ...
  http://www.google.es/patents/US7645934?dq=flatulence
*  Patent US20050238889 - Layered components, materials, methods of production and uses thereof - Google Patents
Methods are also described of minimizing the diffusion of metal atoms, reactive etchants or CVD/ALD precursor materials into a ... Contemplated cage compounds need not necessarily be limited to being comprised solely of carbon atoms, but may also include ... Further contemplated cage structures include fullerenes, and crown ethers having at least one bridge. For example, an ... shows the plurality of ordered silicon atoms 20 before diffusion of the copper atom 10 into the plurality of silicon atoms 20. ...
  http://www.google.com/patents/US20050238889?dq=5,960,411
*  Advanced practical organic chemistry
Notice that both compounds contain 2 carbon atoms, 6hydrogen atoms and 1 oxygen atom. Even though the atoms are the same, they ... Thus 18-crown-6 showsa high affinity for K+ (ionic diameter 2.66 Å) and 15-crown-5 for Na+(ionic diameter 1.80 Å). The crown ... Isomerism increases the number of organic compounds.The more carbon atoms in a compound, the more ways ofarranging the atoms ... contains a single carbon atom bonded to four hydrogen atoms: Methane: A carbon atom bonded to 4 hydrogen atoms But carbon can ...
  https://www.slideshare.net/brettnmanda/advanced-practical-organic-chemistry-15260655
*  Crown ether - Wikipedia
Crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups. The most common crown ethers ... Hydrogen-bonds are formed between the three hydrogen atoms of protonated amines and three oxygen atoms of 18-crown-6. These ... For example, 18-crown-6 has high affinity for potassium cation, 15-crown-5 for sodium cation, and 12-crown-4 for lithium cation ... and a crown sitting on a person's head. The first number in a crown ether's name refers to the number of atoms in the cycle, ...
  https://en.wikipedia.org/wiki/Crown_ether
*  US8669519B2 - Methods for detecting reverse triiodothyronine by mass spectrometry - Google Patents
... ionizing the compounds to form charged compounds; and (2) detecting the molecular weight of the charged compounds and ... As used herein, the term "fast atom bombardment" or "FAB" refers to methods in which a beam of high energy atoms (often Xe or ... Test samples are dissolved in a viscous liquid matrix such as glycerol, thioglycerol, m-nitrobenzyl alcohol, 18-crown-6 crown ... Drug compounds in protic solvents are usually observed as MH+, whereas nonpolar compounds such as naphthalene or testosterone ...
  https://patents.google.com/patent/US8669519B2/en
*  Patente US7914552 - Method of performing an end-to-end anastomosis using a stent and an adhesive - Google Patentes
The other adhesive compound is applied to saturate the bandage and the combination of an adhesive and an adhesive initiator ... A bandage containing one adhesive compound selected from the group of an adhesive and an adhesive initiator is wrapped about ... sulfur compounds such as thiourea and polysulfides; polymeric cyclic ethers such as monensin, nonactin, crown ethers, ... especially those with an alkyl containing 6-18 carbon atoms; benzethonium chloride; and salts of sulfadiazine. Cobalt ...
  http://www.google.es/patents/US7914552?dq=flatulence