METAL PNICTIDES

Among binary transition-metal pnictides, only the first-row transition-metal phosphides have been analysed by XPS extensively, whereas arsenides and antimonides have been barely studied [51-61]. Table 2 reveals some general trends in the P 2p3/2 BEs for various first-row transition-metal monophosphides, as well as some metaland phosphorus-rich members forming for a given transition metal. Deviations of as much as a few tenths of an electron volt are seen in the BEs for some compounds measured multiple times by different investigators (e.g., MnP), but these... [Pg.111]

B. Electronic Features and Structural Principles of Molecular Main Group Metal Pnictides... [Pg.235]

Fig. 1. Structural motifs of metal pnictides two- and three-dimensional (ladderlike aggregation).

It has been expected that reactivity of metalated pnictides is strongly dependent on the degree of association. One consequence is that the basicity of amides has been correlated with the grade of association by means of extensive 7Li and 16N NMR investigations (16, 17). In contrast, knowledge of structure-reactivity relationships for... [Pg.240]

The metal pnictides discussed earlier are much more strongly aggregated than those of their monometalated analogues. The latter represent highly flexible systems in solution that undergo fast ion-pair separation processes (2). The multinuclear NMR spectra of the... [Pg.253]

Bromine azide, 0256 Chlorine azide, 4030 Cyanogen azide, 0544 Fluorine azide, 4307 Iodine azide, 4621 See metal pnictides... [Pg.182]

Trimercuiy tetraphosphide, 4616 Tungsten carbide, 0563 Uranium carbide, 0562 Uranium dicarbide, 1028 Zinc phosphide, 4876 Zirconium dicarbide, 1029 METAL PNICTIDES... [Pg.246]

As an alternative to the hydrocarbon-elimination method, salt-elimination reactions involving an organometallic halide, which can be generated in situ, and an alkali-metal pnictide have also been used (Scheme 9.15a). The elimination of a volatile triorganosilyl halide is viable in cases where the steric bulk... [Pg.141]

Zinc iodide, 4627 Zirconium dibromide, 0284 Zirconium tetrachloride, 4172 Zirconium tetraiodide, 4634 Zirconium trichloride, 4154 Zirconium(II) chloride, 4115 See also METAL PNICTIDES... [Pg.2430]

Metal cyanides(and cyano complexes), 216 Metal derivatives of organofluorine compounds, 217 IV-Metal derivatives, 218 Metal dusts, 220 Metal fires, 222 Metal fulminates, 222 Metal halides, 222 Metal—halocarbon incidents, 225 Metal halogenates, 226 Metal hydrazides, 226 Metal hydrides, 226 Metal hypochlorites, 228 Metallurgical sample preparation, 228 Metal nitrates, 229 Metal nitrites, 231 Metal nitrophenoxides, 232 Metal non-metallides, 232 Metal oxalates, 233 Metal oxides, 234 Metal oxohalogenates, 236 Metal oxometallates, 236 Metal oxonon-metallates, 237 Metal perchlorates, 238 Metal peroxides, 239 Metal peroxomolybdates, 240 Metal phosphinates, 240 Metal phosphorus trisulfides, 240 Metal picramates, 241 Metal pnictides, 241 Metal polyhalohalogenates, 241 Metal pyruvate nitrophenylhydrazones, 241 Metals, 242 Metal salicylates, 243 Metal salts, 243 Metal sulfates, 244 Metal sulfides, 244 Metal thiocyanates, 246 Metathesis reactions, 246 Microwave oven heating, 246 Mild steel, 247 Milk powder, 248... [Pg.2639]

Newer superconductors are MgB2, a type-II BCS superconductor (TC = 39K) [62], "doped" FeSe (TC<27K) [63], and d-metal pnictide oxide superconductors LaFeAsO0.89F0.11 (TC = 26K) [64], Lao.sYosFeAsOo/,... [Pg.798]

Transition Metal Pnictides and Compounds with Group IV Elements. [Pg.413]