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首页> 外文期刊>Acta Crystallographica, Section B. Structural science, crystal engineering and materials >Bond-length distributions for ions bonded to oxygen: metalloids and post-transition metals
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Bond-length distributions for ions bonded to oxygen: metalloids and post-transition metals

机译：离子键合到氧气的粘结长度：金属剂和过渡后金属

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摘要

Bond-length distributions have been examined for 33 configurations of the metalloid ions and 56 configurations of the post-transition metal ions bonded to oxygen, for 5279 coordination polyhedra and 21 761 bond distances for the metalloid ions, and 1821 coordination polyhedra and 10 723 bond distances for the post-transition metal ions. For the metalloid and post-transition elements with lone-pair electrons, the more common oxidation state between n versus n+2 is n for Sn, Te, Tl, Pb and Bi and n+2 for As and Sb. There is no correlation between bond-valence sum and coordination number for cations with stereoactive lone-pair electrons when including secondary bonds, and both intermediate states of lone-pair stereoactivity and inert lone pairs may occur for any coordination number > [4]. Variations in mean bond length are ~0.06- 0.09 ? for strongly bonded oxyanions of metalloid and post-transition metal ions, and ~0.1-0.3 ? for ions showing lone-pair stereoactivity. Bond-length distortion is confirmed to be a leading cause of variation in mean bond lengths for ions with stereoactive lone-pair electrons. For strongly bonded cations (i.e. oxyanions), the causes of mean bond-length variation are unclear; the most plausible cause of mean bond-length variation for these ions is the effect of structure type, i.e. stress resulting from the inability of a structure to adopt its characteristic a priori bond lengths.
机译：已经检查了33种金属离子的33个配置的粘合长度分布，5279个配位金属离子和金属离子的21 761键距离和1821个协调多面体和10 723键的21 761键距离后过渡后金属离子的距离。对于具有孤立电子的金属和后转变元件，N与N + 2之间的较高氧化状态为Sn，Te，T1，Pb和Bi和N + 2的N，用于和Sb。当包括立体杆对电子时，粘合价和与立体唯一对电子的阳离子之间的配位数量没有相关性，并且对于任何配位> [4]，可以出现孤立立体粘连和惰性唯一对的中间状态。平均键长的变化长度为约0.06-0.09？对于金属体和后过渡后金属离子的强键合氧合，〜0.1-0.3？对于显示孤立立体活性的离子。确认键长失真是具有立体活性孤牌电子的离子的平均键长变化的主要原因。对于强键合的阳离子（即氧气），平均键长变化的原因尚不清楚;这些离子的平均键长变化的最合理的原因是结构型的效果，即由结构不能采用其特征来采用其特征的施加效应。

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