*  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 "Aza-crowns" consist of crown ethers wherein an ether oxygen has been replaced by an amine group.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
*  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
*  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
*  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
*  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
*  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
*  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
*  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
*  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
*  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
*  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
*  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
*  Cryptand - Wikipedia
This compound is termed [2.2.2]cryptand where the numbers indicate the number of ether oxygen atoms (and hence binding sites) ... In contrast to crown ethers, cryptands bind the guest ions using both nitrogen and oxygen donors. This three-dimensional ... The most common and most important cryptand is N[CH2CH2OCH2CH2OCH2CH2]3N; the formal IUPAC name for this compound is 1,10-diaza ... These molecules are three-dimensional analogues of crown ethers but are more selective and strong as complexes for the guest ...
  https://en.wikipedia.org/wiki/Cryptand
*  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
*  Alpha-morpholino ribonucleoside derivatives and polymers thereof - Anti-Gene Development Group
These subunits can be linked together by uncharged linkages, one to three atoms in length, joini ... the linkages in the five-atom, six-atom, and seven-atom repeating-unit backbone contribute one, two, and three atoms to the ... Conversion of the 5' hydroxyl to the alkoxy can be achieved by KOH and a suitable phase transfer catalyst (e.g. 18-Crown-6). ... These compounds have been shown to bind to and selectively block single-strand polynucleotide target sequences. However, ...
  http://www.freepatentsonline.com/5235033.html
*  18-Crown-6 - Wikipedia
18-Crown-6 binds to a variety of small cations, using all six oxygens as donor atoms. Crown ethers can be used in the ... 18-Crown-6 is an organic compound with the formula [C2H4O]6 and the IUPAC name of 1,4,7,10,13,16-hexaoxacyclooctadecane. It is ... 18-Crown-6 has a high affinity for the hydronium ion H3O+, as it can fit inside the crown ether. Thus, reaction of 18-crown-6 ... 18-crown-6)+]OAc− + C6H5CH2Cl → C6H5CH2OAc + [K(18-crown-6)+]Cl− The first electride salt using 18-crown-6 that has been ...
  https://en.wikipedia.org/wiki/18-Crown-6
*  Patent US5462989 - Fiber optic potassium ion sensor - Google Patents
The molecule, e.g., 2,2-bis[3,4-(15-crown-5)-2-nitrophenylcarbamoxymethyl]tetradecanol-14, has at least one binding site and is ... Step 1: Synthesis of 4-nitro(15-crown-5)-3-phenylisocyanate.. The starting material was a benzo-15-crown-5 compound (Aldrich ... A. Synthesis of BME-44 with OH group at the end of the (CH2)12 group (Hydroxy-BME-44) (on the fourteenth carbon atom of the ... 5 groups folds such that a hydrogen bond is formed between O of NO2 near one crown group and H of NH group near the other crown ...
  http://www.google.com/patents/US5462989?dq=5,815,794
*  EP2010062027 CYTOHESIN INHIBITORS
Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms ... having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel ... with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or ... having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel ...
  https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2011020849