Influence of Tertiary Phosphanes on the Coordination Configurations and Electrochemical Properties of Iron Hydrogenase Model Complexes: Crystal Structures of [(μ-S2C3H6)Fe2(CO)6–nLn] (L = PMe2Ph, n = 1, 2; PPh3, P(OEt)3, n = 1)
✍ Scribed by Ping Li; Mei Wang; Chengjiang He; Guanghua Li; Xiaoyang Liu; Changneng Chen; Björn Åkermark; Licheng Sun
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 167 KB
- Volume
- 2005
- Category
- Article
- ISSN
- 1434-1948
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A series of mono‐ and disubstituted diiron complexes [(μ‐pdt)Fe~2~(CO)~5~L] [pdt = 1,3‐propanedithiolato; L = PMe~3~ (2), PMe~2~Ph (3PPh~3~ (4), P(OEt)~3~ (5)] and [(μ‐pdt)Fe~2~(CO)~4~L~2~] [L = PMe~2~Ph (6), PPh~3~ (7), P(OEt)~3~ (8)] were prepared as Fe‐only hydrogenase‐active‐site models by controllable CO displacement of [(μ‐pdt)Fe~2~(CO)~6~] by tertiary phosphanes. The coordination configurations of 3–6 were characterized by X‐ray crystallography. Disubstituted diiron complex 6 features an apical/apical coordination mode, instead of the typical transoid basal/basal configuration. The electrochemistry of 2–6 and 8 was studied by cyclic voltammetry to evaluate the effects of different tertiary phosphane ligands on the redox properties of the iron atoms of model complexes. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)