Heterocations

Synth Commun Lect. Heteroc Chem Org. Synth... 

Supplementary Work, Vol 24 Perfluorohnloorganic Compounds of Mam Group Elements Part 3 Phosphorus, Arsenic, Antirnon and Bismuth Compounds Perfhiorohaloorganic Compounds of Main Group Elements Part 5 Compounds oj Nitrogen (Heteroc clrc Compounds)... 

There are specific associations of various types of dipoles with the four major classes of heterocyclic mesomeric betaines, which have implications in providing a rational foundation for correlating the chemical reactions of these compounds (85T2239). Eight dipole types, systematically generated by union of the heterocations H2C = with carbanions and... 

Cf. also Hanson, P. Heteroaromatic Radicals, Part I General Properties Radicals with Group V Ring Heteroatoms. In Adv. Heteroc. Chem. 25, 205 (1979)... 

X-ray crystallography, 40 20-21 synthetic models, 40 23-48 xanthane oxidase, 40 21-23 chalcogenide halides, 23 370-377, 413 Chevrel phases, 23 376-377 metal-metal bonding, 23 330, 373 structural data, 23 373-376 as superconductors, 23 376 synthesis, 23 371-372 chloride, 46 4-24, 35-44 heterocations of, 9 290, 291 cluster compounds, 44 45-46 octahedral, 44 47-49, 53-63 electronic structure, 44 55-63 molecular structure, 44 53-54 synthesis, 44 47-49 rhomboidal, 44 75-82 solid-state clusters and, 44 66-72, 74-75, 80-82, 85-87 tetrahedral, 44 72-75 triangular, 44 82-87 cofactor, 40 2, 4-12 anaerobic isolation, 40 5 molybdopterin and, 40 4-8 reduced form, 40 12 synthesis, 40 8-12 xanthine oxidase, 45 60-63 complexes... 

MI237 G. Gamoutsis and G. Pairas, Trends Heteroc cl. Chem., 2003, 9, 237. 

The following nomenclature has been used in this review The ring system is named as the appropriate heterocation and the exocyclic group carrying the negative charge is named as the appropriate anion (i.e., olate, thiolate, aminide, or methylate). Thus, compounds of type 9 are named as... 

Effect of ion doping. Since (photo)-electronic processes are involved at the surface of titania, this oxide was modified by ion doping, both of p- and n-type, by dissolving either tri-(Ga3+, 3+) or pentavalent (Sb5+, V +) heterocations during the preparation by the flame reactor method (ref. 16), which produced homodispersed and homogeneously doped non-... 

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