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Potassium octachloridodirhenate(III) is an inorganic compound with the formula K2Re2Cl8. This dark blue salt is well known as an early example of a compound featuring quadruple bond between its metal centers. Although the compound has no practical value, its characterization was significant in opening a new field of research into complexes with quadruple bonds.〔 ==Synthesis and reactions == Soviet chemists first reported K2() in 1954, but it was not until 1964 that a different study correctly characterized the compound as featuring a short Re-Re bond, the first of its kind discovered.〔Cotton, F. A.; Harris, C. B. Inorg. Chem., 1965, 4 (3), 330-333. 〕 The results of this classic study subsequently led to new work into other metals capable of forming metal bonds, such as Cr, Mo, W, and Tc.〔Hao, S.; Gamboratta, S.; Bensimon, C. J. Amer. Chem. Soc. 1992, 114, 3556. 〕〔Cotton, F.A.; Eglin, J.L.; Hong, B.; James, C.A. J. Amer. Chem. Soc. 1992, 114, 4915. }〕〔Cotton, F.A.; Chen, H.; Daniels, L.M.; Feng, X. J. Amer. Chem. Soc. 1992, 114, 8980. 〕 A high-yield synthesis of the tetrabutylammonium salt involves treating the perrhenate salt with benzoyl chloride followed by HCl: :2 ()ReO4 + 8 C6H5COCl → ()2() + organic products : Octachloridodirhenate(III) is a precursor to other complexes with multiply bonded rhenium centers as the quadruple bond is quite stable and is often maintained in ligand-substitution reactions. For example, upon treatment with concentrated HBr, the complex forms the analogous anion ()2−, which can easily be converted into other dirhenium species.〔Barder, T.J.; Walton, R.A. Inorg. Synth. 1985, 23, 116-118. 〕 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「Potassium octachlorodirhenate」の詳細全文を読む スポンサード リンク
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