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• 作者：Kallol Ray ; Thomas Weyhermü ; ller ; Anton Goossens ; Menno W. J. Crajé ; and Karl Wieghardt
• 刊名：Inorganic Chemistry
• 出版年：2003
• 出版时间：June 30, 2003
• 年：2003
• 卷：42
• 期：13
• 页码：4082 - 4087
• 全文大小：148K
• 年卷期：v.42,no.13(June 30, 2003)
• ISSN：1520-510X

文摘

The square planar, light-green, diamagnetic complex [N(n-Bu)₄][Au^III(L^t-Bu)₂] (1) reacts with iodine in acetone affordingthe neutral paramagnetic species [Au(L^t-Bu)₂] (1a) (S = ¹/₂) where H₂[L^t-Bu] represents the ligand 3,5-di-tert-butyl-1,2-benzenedithiol. The corresponding complexes containing the unsubstituted ligand H₂[L], 1,2-benzenedithiol,namely [N(n-Bu)₃H][Au(L)₂] (2) and [Au(L)₂] (2a), have also been prepared and characterized by X-ray crystallography;the structure of the latter has been reported in ref 10. ¹⁹⁷Au Mössbauer spectra of 1 and 1a clearly show that theone-electron oxidation is ligand-centered and does not involve the formation of Au(IV) (d⁷). The spectroscopicfeatures of the ligand mixed-valent species 1a were determined by UV-vis, EPR, and IR spectroscopy whichallows the detection of S,S-coordinated 1,2-dithiobenzosemiquinonate(1-) radicals in coordination compounds.