Reductive coupling of six carbon monoxides by a ditantalum hydride complex.
Reductive coupling of six carbon monoxides by a ditantalum hydride complex.
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DOI：
10.1021/ja9007276
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发表时间：
2009-02
影响因子：
15
通讯作者：
Takahito Watanabe;Yutaka Ishida;Tsukasa Matsuo;H. Kawaguchi
中科院分区：
文献类型：
--
作者：
Takahito Watanabe;Yutaka Ishida;Tsukasa Matsuo;H. Kawaguchi
二钽氢化物配合物在温和条件下发生六个CO分子的头对头C-C偶联，产生八阴离子C（6）O（6）单元。在反应过程中，六个CO分子发生八电子还原。在产物中，C（6）O（6）单元通过六个氧原子和两个碳原子与四个钽金属配位。Ta（4）C（6）O（6）核内的几何参数表明来自hexatriene-hexaolate形式的显著贡献。
A ditantalum hydride complex undergoes head-to-head C-C coupling of six CO molecules under mild conditions to produce an octaanionic C(6)O(6) unit. During the reaction, eight-electron reduction of six CO molecules takes place. In the product, the C(6)O(6) unit is coordinated to four tantalum metals through six oxygen and two carbon atoms. The geometrical parameters within the Ta(4)C(6)O(6) core indicate significant contribution from a hexatriene-hexaolate form.