Neutron powder diffraction and solid-state deuterium NMR studies of Ca2RuD6 and the stability of transition metal hexahydride salts

被引：12

作者：

Moyer, Ralph O., Jr. ^{[2
]}

Antao, Sytle M. ^{[3
]}

Toby, Brian H. ^{[3
]}

Morin, Frederick G. ^{[1
]}

Gilson, Denis F. R. ^{[1
]}

机构：

[1] McGill Univ, Dept Chem, Montreal, PQ H3A 2K6, Canada

[2] Trinity Coll, Dept Chem, Hartford, CT 06106 USA

[3] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 460卷 / 1-2期

关键词：

ternary metal hydrides; neutron diffraction; deuterium NMR; stability;

D O I：

10.1016/j.jallcom.2007.05.078

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The crystal structure of Ca2RuD6 has been determined by neutron powder diffraction: space group Fm3m, K2PtCl6 Structure, as found for other hexahydride salts of group 8 metals with alkaline earth or lanthanide counter ions. No structural phase transition was observed between 340 K and 50 K. The deuterium nuclear quadrupole coupling constant, 54.7 kHz, leads to an ionic character of the Ru-D bond of 76%. The known trends in the behaviour of A(2)MH(6) salts are interpreted in terms of the ionization energies of the cation and the central metal atom. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：138 / 141

页数：4

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