Isovalent and mixed-valent diruthenium complexes [(acac)2RuII (μ-bpytz)RuII(acac)2] and [(acac)2RuII(μ-bpytz)RuIII(acac)2](ClO4) (acac= acetylacetonate and bpytz=3,6-bis(3,5-dimethylpyrazolyi)-1,2,4,5-tetrazine):: Synthesis, spectroelectrochemical, and EPR investigation

被引：58

作者：

Patra, S

Sarkar, B

Ghumaan, S

Fiedler, J

Kaim, W ^{[1
]}

Lahiri, GK

机构：

[1] Indian Inst Technol, Dept Chem, Bombay 400076, Maharashtra, India

[2] Univ Stuttgart, Inst Anorgan Chem, D-70550 Stuttgart, Germany

[3] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, CZ-18223 Prague, Czech Republic

来源：

INORGANIC CHEMISTRY | 2004年 / 43卷 / 19期

关键词：

D O I：

10.1021/ic049346r

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The title compounds involving the structurally characterized bridging ligand bpytz were characterized, showing very strong electrochemical stabilization of the mixed-valent (RuRuIII)-Ru-II state (K-c = 10(13.9)) but no detectable (epsilon < 20 M-1 cm(-1)) intervalence charge-transfer band in the infrared region. In situ reduction of the neutral precursor produces a diruthenium(II) complex of the bpytz radical anion according to EPR spectroscopy, whereas oxidation of the mixed-valent form leads to a diruthenium(III) species.

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页码：6108 / 6113

页数：6

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