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Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry Volume 30, 2000 - Issue 4

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Original Articles

Synthesis, Crystal Structure and Spectral Properties of a Triply Bridged Diiron(III) Complex, [Fe₂(IDB)₂(μ-O)(μ-OAc)₂]Cl₂·CH₃OH

Zhanru Liao Department of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China; State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, P. R. China

Daofeng Xiang Department of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China; State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, P. R. China

Dongfeng Li Department of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China; State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, P. R. China

Fang Sheng Department of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China; State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, P. R. China

Fusheng Mei Department of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China; State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, P. R. China

Baosheng Luo Analysis and Testing Center, Wuhan University, Wuhan, 430072, P. R. China

Liaorong Shen Analysis and Testing Center, Wuhan University, Wuhan, 430072, P. R. China

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Pages 683-693 | Received 01 Jul 1999, Accepted 01 Dec 1999, Published online: 23 Apr 2008

Cite this article
https://doi.org/10.1080/00945710009351791

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Abstract

A diiron(III) complex, [Fe₂ (IDB₎₂ (μ-O)(μ-OAc) ₂]Cl₂ · CH₃OH, in which IDB is N,N-di(2-benzimidazolylmethyl)imine, has been characterized by single-crystal X-ray diffractometry and spectrometry. The compound crystallizes in the space group C2/C with a = 23.700(5), b = 20.690 (5), c = 17.721 (9) Å, β = 111.19(4)°, V = 8101.7(7) Å³ Z = 8 and is solved for 3120 reflections with I > 4.0σ(I), giving final R = 0.09840 and R _w = 0.11914. The two iron(III) atoms of the binuclear unit are bridged by one oxo atom and two acetate groups, affording a diiron core with a Fe-O-Fe angle of 116.8(6)° and Fe-Fe distance of 3.118 Å. Each iron atom is bound to a facially coordinating tridentate ligand IDB with the aliphatic nitrogen donor situated trans to the μ-oxo atom and in a distorted octahedral geometry. The structural data, electronic absorption, infrared and Raman spectra of the compound are very similar to those of other compounds containing the [Fe₂ (μ-O)(μ-RCO₂)₂]²⁺ core.

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