Predicting guest orientations in layered double hydroxide intercalates

被引:64
作者
Fogg, AM
Rohl, AL
Parkinson, GM
O'Hare, D
机构
[1] Curtin Univ Technol, Sch Appl Chem, AJ Parker Cooperat Res Ctr Hydromet, Perth, WA 6845, Australia
[2] Univ Oxford, Inorgan Chem Lab, Oxford OX1 3QR, England
关键词
D O I
10.1021/cm990066x
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
Molecular mechanics have been used to rationalize the structures of the layered double hydroxide intercalates [LiAl2(OH)(6)]Cl, [LiAl2(OH)(6)]Br, and [LiAl2(OH)(6)]NO3. The simulations showed that calculated lowest energy structures were in good agreement with the experimentally determined structures and were able to explain the positional disorder of the NO3- guest anions found in the structure of [LiAl2(OH)(6)]NO3. Furthermore, the calculations also proved to be a useful predictive tool for the interlayer spacing and consequently the guest orientation in the related intercalates [LiAl2(OH)(6)](2)CO3, [LiAl2(OH)(6)](2)-SO4, and [LiCAl2(OH)(6)](2)C2O4, for which the structures have not been determined by conventional diffraction techniques.
引用
收藏
页码:1194 / 1200
页数:7
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