Journal of Cluster Science

, Volume 25, Issue 2, pp 495–503 | Cite as

Synthesis and Crystal Structures of Diiron Dithiolate Complexes Containing Diphosphine Ligands

  • Xu-Feng Liu
  • Hao-Qi Gao
Original Paper


As the active site model of [FeFe]-hydrogenases, complexes [(μ-PDT)Fe2(CO)5]2(dppb) (PDT = SCH2CH2CH2S, dppb = Ph2PCH2CH2CH2CH2PPh2) (1) and [(μ-SCH2)2NCH2CO2Me]Fe2(CO)5(dppm) (dppm = Ph2PCH2PPh2) (2) were prepared by reactions of (μ-PDT)Fe2(CO)6 (A) or [(μ-SCH2)2NCH2CO2Me]Fe2(CO)6 (B) with dppb or dppm in the presence of the decarbonylating agent Me3NO∙2H2O in MeCN at room temperature. Complex 1 was characterized by elemental analysis, IR, and 1H (31P, 13C) NMR spectroscopic techniques. In addition, the molecular structures of 1 and 2 have been confirmed by single crystal X-ray diffraction analysis. In the crystal structure of 1, two phosphorus atoms of dppb reside in a basal position of the square-pyramidal coordination sphere of the Fe2 and Fe3 atoms. However, in the crystal structure of 2, P1 atom of dppm resides in an apical position of the square-pyramidal coordination sphere of the Fe2 atom.


Diiron dithiolate Diphosphine ligand Carbonyl substitution Synthesis Crystal structure 



This work was supported by National Training Programs of Innovation and Entrepreneurship for Undergraduates (201311058010) and Ningbo Science and Technology Innovation Team (2011B82002).


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Department of Chemical EngineeringNingbo University of TechnologyNingboChina

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