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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Bond valence method ： ウィキペディア英語版 Bond valence method The bond valence method or mean method (or bond valence sum) (not to be mistaken for the valence bond theory in quantum chemistry) is a popular method in coordination chemistry to estimate the oxidation states of atoms. It is derived from the bond valence model, which is a simple yet robust model for validating chemical structures with localized bonds or used to predict some of their properties. This model is a development of Pauling's rules. == Method == The basic method is that the valence ''V'' of an atom is the sum of the individual bond valences ''vi'' surrounding the atom: :$V\; =\; \backslash sum(v\_i)$ The individual bond valences in turn are calculated from the observed bond lengths. :$v\_i=\backslash exp\; \backslash left(\; \backslash frac\; \backslash right)$ ''Ri'' is the observed bond length, ''R0'' is a tabulated 〔 parameter expressing the (ideal) bond length when the element ''i'' has exactly valence 1, and ''b'' is an empirical constant, typically 0.37 Å. Also, :$v\_i=\; \backslash left(\; \backslash frac\; \backslash right)^$ see 〔ALTERMATT, D. & BROWN, I. D. (1985). Acta Cryst. (1985). B41, 244-247〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bond valence method」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.