heteroatom


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heteroatom

[′hed·ə·rō‚ad·əm]
(organic chemistry)
In an organic compound, any atom other than carbon or hydrogen.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Characterization of heteroatom compounds in a crude oil and its saturates, aromatics, resins, and asphaltenes (SARA) and non-basic nitrogen fractions analyzed by negative-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry.
The anaerobic solid-state pyrolysis reactions that produce carbonaceous char [C.sub.s] from a hydrocarbon plastic or compound containing halogen X = F, Cl, Br, I or heteroatoms P = P, S, Si are
Seth, Synthesis, characterization, and antimicrobial activity of palladium(II) and platinum(II) complexes with 2-substituted benzoxazole ligands, Heteroatom Chem; 21, 44 (2010).
Doping (heteroatom substitution) is also a promising approach to enable single-walled carbon nanotubes (SWCNTs) to detect gas molecules as well as organic chemicals and biological substances, since the adsorption capability of SWCNTs can be improved through introducing heteroatom impurities (such as boron, nitrogen, silicon, zinc, and titanium) and forming active sites in tube walls.
Teimouri, A Novel One-Pot Procedure for Preparation of Some New Condensed Pyrido[2, 3-d]pyrimidine(1H, 3H)-2, 4-diones, Heteroatom Chem., 18, 16 (2007).
The XOAv descriptor is derived directly from the molecular structural formula, encoding information about the size, branching, cyclizalion, unsaturation, and heteroatom content in the molecule.
Coverage includes the substitution of sugar hydroxyl groups; substituting glycosidic oxygen with carbon, cyclitols and carbasugars where the endocyclic oxygen is replaced with carbon; and other types of endocyclic heteroatom substitutions.
That is, a reduction in phenyl ring electronegativity caused by the electron-withdrawing heteroatom adjacent to C4' benefits the interaction of the inhibitor and ER[alpha].
In addition, aromatic compounds (9.8%) and heteroatom compounds (21.9%) containing an N or S atom were detected.
There is a general consensus by several authors that the more negatively charged an heteroatom is the more it can be adsorbed on the metal surface through donor-acceptor type reaction [65-68].