(N-CnH2n−1)-1,3-Azapropanedithiolate (n = 5, 6, 7)-bridged diiron complexes as mimics for the active site of [FeFe]-hydrogenases: the influence of the bridge on the diiron complex

Youtao Si; Chengbing Ma; Mingqiang Hu; Hui Chen; Changneng Chen; Qiutian Liu

doi:10.1039/B616236C

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(N-C_nH_2n−1)-1,3-Azapropanedithiolate (n = 5, 6, 7)-bridged diiron complexes as mimics for the active site of [FeFe]-hydrogenases: the influence of the bridge on the diiron complex†

Youtao Si,^ab Chengbing Ma,^a Mingqiang Hu,^ab Hui Chen,^a Changneng Chen*^a and Qiutian Liu^a

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* Corresponding authors

^a Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
E-mail: ccn@fjirsm.ac.cn
Fax: +86 591/83792395
Tel: +86 591/83792395

^b Department of Chemistry, Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Abstract

To further understand the effects of 1,3-azadithiolate (ADT) bridges on the structures and properties of diiron complexes, a novel family of (N-C_nH_2n−1)-1,3-azapropanedithiolate-bridged diiron complexes [Fe₂(CO)₆(CH₂S)₂N–C_nH_2n−1] (n = 5, 6, 7) and their PMe₃-disubstituted complexes [Fe₂(CO)₄(PMe₃)₂(CH₂S)₂N–C_nH_2n−1] (n = 5, 6, 7) were synthesized as mimics of [FeFe]-hydrogenases. Our studies suggest that the coordination configurations, CO stretching frequencies, ¹H and ³¹P NMR signals, redox potentials and electrocatalytic H₂-production processes of diiron complexes are closely pertinent to the electron-donating abilities and steric chemistry of the ADT bridges.

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Article information

DOI: https://doi.org/10.1039/B616236C
Article type: Paper
Submitted: 07 Nov 2006
Accepted: 28 Mar 2007
First published: 24 Apr 2007

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New J. Chem., 2007,31, 1448-1454

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(N-C_nH_2n−1)-1,3-Azapropanedithiolate (n = 5, 6, 7)-bridged diiron complexes as mimics for the active site of [FeFe]-hydrogenases: the influence of the bridge on the diiron complex

Y. Si, C. Ma, M. Hu, H. Chen, C. Chen and Q. Liu, New J. Chem., 2007, 31, 1448 DOI: 10.1039/B616236C

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