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The assignment and validation of metal oxidation states in the Cambridge Structural Database

机译:剑桥结构数据库中金属氧化态的分配和验证

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A methodology has been developed for the semi-automatic assignment and checking of formal oxidation states for metal atoms in the majority of metallo-organic complexes stored in the Cambridge Structural Database (CSD). The method uses both chemical connectivity and bond-length data, via ligand donor group templates and bond-valence sums, respectively. In order to use bond-length data, the CSD program QUEST has been modified to allow the coordination sphere of metal atoms to be recalculated using user-defined criteria at search time. The new methodology has been used successfully to validate the +1, +2 and +3 oxidation states in 743 four-coordinate copper complexes in the CSD for which atomic coordinates are available in ca 99% of structures using one or other method, and both succeed for >86% of structures. [References: 60]
机译:已经开发了一种方法,用于半自动分配和检查剑桥结构数据库(CSD)中存储的大多数金属有机配合物中金属原子的形式氧化态。该方法分别通过配体供体基团模板和键合价和使用化学连通性和键长数据。为了使用键长数据,对CSD程序QUEST进行了修改,以允许在搜索时使用用户定义的标准重新计算金属原子的配位范围。新方法已成功用于验证CSD中的743个四配位铜配合物的+ 1,+ 2和+3氧化态,使用一种或其他方法可在约99%的结构中获得原子坐标,并且两者成功> 86%的结构。 [参考:60]

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