Anhydrous tin and lead hexacyanoferrates (II). Part II. Electronic structure and chemical bonding

被引:5
|
作者
Zhukov, VP [1 ]
Zainullina, VM [1 ]
Zubkov, VG [1 ]
Tyutyunnik, AP [1 ]
Denisova, TA [1 ]
机构
[1] Russian Acad Sci, Inst Solid State Chem, Urals Branch, Ekaterinburg, Russia
基金
俄罗斯基础研究基金会;
关键词
D O I
10.1016/S1293-2558(01)01154-2
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The electronic structure and chemical bonding of anhydrous tin and lead hexacyanoferrates (H) have been studied using the linear muffin-tin orbital method in the tight-binding minimal basis set approximation and serni-empirical Huckel method. The hybridised sand p-states of CN-groups were shown to have a dominant influence on the electronic structure of these compounds, that results in strong splitting of iron d-states. The chemical bonding C-N and Fe-C in the [Fe(CN)(6)](4-)-complex are mainly covalent. Bonds between Pb(Sn) and N atoms are more weak covalent and anisotropic. The low stability of tin hexacyanoferrate is due to high anisotropy of Sn-TN bonding. (C) 2001 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
引用
收藏
页码:539 / 544
页数:6
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