Tetrairon Ethanedithiolate Complex with Intermolecularly Bridging bis(diphenylphosphino)acetylene

ABSTRACT

In this article, a tetrairon ethanedithiolate complex [(µ-SCH₂CH₂S-µ)Fe₂(CO)₅]₂(Ph₂PC≡CPPh₂) was reported. The title complex could be easily prepared by ligand exchange reaction of the starting material (µ-SCH₂CH₂S-µ)Fe₂(CO)₆ with Ph₂PC≡CPPh₂ and Me₃NO·2H₂O in CH₂Cl₂/MeCN solutions at ambient temperature. The title complex was new and structurally characterized by NMR spectroscopy and X-ray diffraction analysis. Its molecular structure reveals that it consists of two butterfly diiron ethanedithiolate units linked together through Ph₂PC≡CPPh₂. In addition, intermolecular C-H…O hydrogen bonds and π-π stacking interactions stabilize the solid state in the crystal packing diagram.

KEYWORDS:

• Carbonyl substitution
• crystal structure
• diiron ethanedithiolate
• diphosphine ligand
• synthesis

Acknowledgment

The author gratefully acknowledges the support of the Zhejiang Provincial Natural Science Foundation (No. LY16B020009) and K.C.Wong Education Foundation.