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An atom, other than carbon, located in the ring structure of an organic compound, as the N in pyridines or pyrimidines (heterocyclic compounds).
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As can be seen from Figures 5a and 5b, the structures associated with resins from American crude oil and Turkish bitumen are substantially different from each other in terms of the linkages between the aromatic structures, heteroatoms, etc.
Seth, Synthesis, characterization, and antimicrobial activity of palladium(II) and platinum(II) complexes with 2-substituted benzoxazole ligands, Heteroatom Chem; 21, 44 (2010).
On the other hand, other investigations have indicated important structural features of molecules that modulate the function of ABCB1, namely two planar aromatic domains and a basic nitrogen atom within an extended aliphatic chain, a bulky aromatic ring system with a heteroatom in the third position toward the anthranilamide nucleus at the opposite end of the tetrahydroquinoline group, hydrophobicity, and nitrogen or hydrogen bond acceptor groups (Chiba et al.
2] are each independently hydrogen or a hydrocarbon group of from 1 to about 20 carbon atoms; M optionally is a divalent hydrocarbon connecting group of from 1 to about 20 carbon atoms to link the silicon atom and the L group; L is a covalently bound hydrocarbon linking group of from 1 to about 20 carbon atoms or a heteroatom linking group selected from the group consisting of --O--, --S--, --[NR.
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.
She currently serves as a member the NSERC Discovery Grant Selection Committee for Inorganic and Organic Chemistry and is a member of the international advisory boards for the International Conference on the Coordination and Organometallic Chemistry of Ge, Sn and Pb, the International Symposium on Organosilicon Chemistry and the International Conference on Heteroatom Chemistry.
n-, where B is a heteroatom selected from P, Si, Ce, Mn or Co, and M is again selected from Mo, V, W or combinations thereof.
The authors have organized the main body of their text into fourteen chapters, covering the importance of heterocyclic compounds, three, four, and five-membered heterocyclic compounds with one heteroatom, bicyclic ring systems derived from pyrrole, furanm and thiophene, and a variety of other related topics.
Assisted by coordination to the heteroatom (Sulfur) of the P3HT, copper ions were distributed uniformly throughout the polymer layer.