Binary carbide not reported

Francium, binary carbide not reported, 11 210 Franck-Condon effect, 16 69 energy, 21 180, 188, 189 envelopes, 16 80, 89, 90 hot bands, 16 90 factors, 32 47 principle, 21 179, 181 vibronic replica, 35 370 frd redon, 38 412, 414 Freeze quench EPR spectroscopy (FQ-EPR), CODH/ACS, 47 318 Fremy s salt, 33 106 Friedel-Crafts reaction, 17 194 cyclophosphazene, 21 65, 66 Frontier molecular orbitals, heteronuclear gold cluster compounds, 39 378-381 Frozen solutions, MOssbauer spectra in studies of, 15 101-103... 

Germanes hydride, 2 76 reactivity of, 2 87 Germanium anionic cluster, 24 227 azides, preparation, 9 138 properties, 9 135-136, 139, 141 binary carbide not reported, 11 211 carbides, preparation of, 11 163 chalcogenide halides, 23 390 chlorides, mass spectra of, 18 248, 249 complexes, xenon fluoride reactions, 46 85 compounds, see also Organogermanium compounds... 

Pair-of-dimer effects, chromium, 43 287-289 Palladium alkoxides, 26 316 7t-allylic complexes of, 4 114-118 [9JaneS, complexes, 35 27-30 112-16]aneS4 complexes, 35 53-54 [l5]aneS, complexes, 35 59 (l8)aneS4 complexes, 35 66-68 associative ligand substitutions, 34 248 bimetallic tetrazadiene complexes, 30 57 binary carbide not reported, 11 209 bridging triazenide complex, structure, 30 10 carbonyl clusters, 30 133 carboxylates... 

Radiolaria, strontium and barium sulfate biomineralization, 36 169-170 Radiopharmaceuticals, design, 36 25-28 Radiosensitizers, 36 37 Radish white root ferredoxins, 38 231 Radium, binary carbide not reported, 11 210 Radon... 

Although this process is an important method whereby very pure and well-crystallized binary carbides can be obtained, no successful attempts with multicomponent carbides have been reported so far. Apparently the conditions for the simultaneous deposition of more than one or two carbides are not easily adjusted. Likewise the simultaneous decomposition of carbonyl mixtures should be feasible, but so far no successful experiments have been reported. 

Nowotny and Auer-Welsbach (1961) synthesized the ternary compound ScTi3C4 isotypic with NaCl (fl=4.5 A). Velikanova et al. (1989) evaluated the hypothetical projection of the solidus surfaces of the phase diagram. A wide range of continuous solid solutions between the isotypic binary carbides ScCi t and TiCi c (ST NaCl) was predicted by them. It might be that the ternary phase observed by Nowomy and Auer-Welsbach is a part of this solid solution, and possibly not an individual ternary compound. Recently this prediction was confirmed experimentally by Ilyenko et al. (1996) who confirmed a complete mutual solubility of ScCi c and TiCi- . These authors reported also that the ScCi j phase is in equilibrium with all the phases of the solidus surface. However, the paper by Ilyenko et al. does not contain a figure of the phase equilibria. 

The Sc-Co-C phase equilibria at 600°C have been established by Pecharskaya (1989) and are shown in fig. 49. The data about the existence at 600 C of SC4C3 binary carbide are not in agreement with the other literature sources (see sect. 2.14). Earlier the existence of three ternary compounds were reported in the system. Their compositions and the crystal structure data are given in table 18. 

Low-temperature solvents are not readily available for many refractory compounds and semiconductors of interest. Molten salt electrolysis is utilized in many instances, as for the synthesis and deposition of elemental materials such as Al, Si, and also a wide variety of binary and ternary compounds such as borides, carbides, silicides, phosphides, arsenides, and sulfides, and the semiconductors SiC, GaAs, and GaP and InP [16], A few available reports regarding the metal chalcogenides examined in this chapter will be addressed in the respective sections. Let us note here that halide fluxes provide a good reaction medium for the crystal growth of refractory compounds. A wide spectrum of alkali and alkaline earth halides provides... 

Because of the evident structmal similarities between transition metal carbides and transition metal nitrides the carbon atoms in group 4 and 5 carbides can be replaced completely by nitrogen without changing the structme of the binary phases. So far only one distinct ternary phase Cr2 (C,N)2 has been reported. Intersolubihty between the binary nitrides and carbides in the group 6 carbonitride systems Cr-C-N and Mo-C-N is not complete because of the differences in the crystal structmes of the carbide and nitride phases. 

The occurrence of the binary borides of the alkaline, alkaline earth, aluminum, and transition elements has been collected in Table 1, together with boron compounds of the right main group elements (carbides, etc.). Only relatively well-established phases have been included. Noncorroborated and/or badly characterized borides lacking precise composition and structure data are not included. The reader is referred to other sources for references. There are no binary borides among the Cu, Zn, Ga, and Ge group elements with the exception of a noncorroborated early report on diborides in the Ag-B and Au-B systems. Two silicon borides have been established, namely, SiB3 4 and SiBe. 

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