Reaction of hydrogen with metallic and reduced halides. The requirement of delocalized electrons for reaction
Reaction of hydrogen with metallic and reduced halides. The requirement of delocalized electrons for reaction
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氢与金属卤化物和还原卤化物的反应。
DOI：
10.1002/chin.197829036
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
J. Corbett
中科院分区：
文献类型：
--
作者：
A. W. Struss;J. Corbett
On the other hand, TiC12, T112, and ZrC13 do not take up significant H2 while only NdC12 of the compounds studied decomposes to known binary phases (NdC1, and NdH2+). Thermodynamic data from equilibrium pressure measurements in the thorium iodide-hydrogen system are reported. The generalization is developed from these studies that hydrogen is taken up only by those halides which contain delocalized electrons, that is, are metallic or contain clusters with delocalized bonding. Structural and bonding implications of these findings are discussed. The general interpretation of the metallic halide hydrides, of the cluster hydrides, and of the binary hydrides of the same elements is considered in terms of multicenter bonding of hydrogen with metal ions via conduction electrons, the hydrogen thereby acquiring a partial negative charge through overlap with the delocalized electrons. This property is reflected in both the rich variety and the often donstoichiometric character of the hydrides considered. CeI2H0.82, PrI2H1.2, SCI2.17H0.6, Ti12.5H0.4, Nb6111H1.3, M?6C!12H0.7, SCC11.5H0.68, GdC11.5H0.90, Z~CI~.SHO.~, and c~ScC13H0.35.
