Etude comparative des hexahydrido-et des hexadeuteridoaluminates de lithium et de sodium. I - Spectres raman et infrarouge de Li3-et Na3AlH6, et Li3AlD6
Etude comparative des hexahydrido-et des hexadeuteridoaluminates de lithium et de sodium. I - Spectres raman et infrarouge de Li3-et Na3AlH6, et Li3AlD6
复制标题
锂和钠的六氢化物和六氘代铝酸盐的比较研究。
DOI：
10.1016/0025-5408(89)90004-4
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发表时间：
1989
影响因子：
5.4
通讯作者：
J. Létoffé
中科院分区：
文献类型：
--
作者：
J. Bureau;Zina Amri;P. Claudy;J. Létoffé
为了研究金属与氢的相互作用，研究了锂、六氢铝酸钠、六氢铝酸盐Li/sub3/AlH/sub6/、Na/sub3/AlH/sub6/和Li/sub3/Ald/sub6/的拉曼光谱和红外光谱。进行了振动分析。用几种力场模型(Urey-Bradley模型、轨道价力场模型、Shimanouchi模型、Murrell模型)计算了Al-H键力常数。不同模型得到的结果之间没有显著差异，从而很好地确定了铝的环境。AlH/sub6//sup 3-/离子在Li/sub3/AlH/sub6/中形成近乎完美的八面体，在Na/sub3/AlH/sub6/中形成扭曲的八面体。
Raman and infrared spectra of Lithium and Sodium hexahydrido- and hexadeuteridoaluminates Li/sub 3/AlH/sub 6/, Na/sub 3/AlH/sub 6/ and Li/sub 3/AlD/sub 6/ have been investigated in order to study metal-hydrogen interactions. A vibrational analysis has been performed. Several force field models (Urey-Bradley, Orbital Valence force field, Shimanouchi, Murrell) have been used in order to compute the force constants of Al-H bonds. No significative difference is observed between the results obtained from the various models, and the environment of aluminum is thus well determined. AlH/sub 6//sup 3-/ ions form an almost perfect octahedron in Li/sub 3/AlH/sub 6/ and a distorted one in Na/sub 3/AlH/sub 6/.