Synthesis and structural characterization of dicobalt–iron clusters containing bridging diphosphine ligands

Abstract

Reaction of (μ ₃-S)FeCo₂(CO)₉ with N-substituted bis(diphenylphosphanyl)amine Ph₂PN(R)PPh₂ (R = CH₂CH₂CH₃, A; CH₂Ph, B) at room temperature in CH₂Cl₂ afforded dicobalt–iron cluster complexes (μ ₃-S)FeCo₂(CO)₇[Ph₂PN(R)PPh₂] (R = CH₂CH₂CH₃, 1; CH₂Ph, 2) in 75% and 66% yields, respectively. 1 and 2 were characterized by elemental analysis and spectroscopy. In addition, the molecular structures of A, 1, and 2 were determined by single crystal X-ray diffraction analysis.

Keywords:

• Dicobalt–iron
• Cluster complex
• Diphosphine ligand
• Synthesis
• Crystal structure

Acknowledgments

This work was supported by the Scientific Research Fund of Zhejiang Education Department (Y201224425), Ningbo Natural Science Foundation (2012A610130), and Ningbo Science and Technology Innovation Team (2011B82002).