Investigations on Macrocyclic Complexes Containing [Fe2S2] Clusters: Synthesis and Characterization

Investigations on Macrocyclic Complexes Containing [Fe2S2] Clusters: Synthesis and Characterization: "

Abstract

Two macrocyclic complexes containing [Fe₂S₂] clusters [(μ-SCH₂)₂Fe₂(CO)₅]₂(NCH₂CH₂N)(Ph₂PCH₂CH₂CH₂PPh₂) (1) and [(μ-SCH₂)₂Fe₂(CO)₅]₂(NCH₂CH₂N)(Ph₂PCH₂CH₂CH₂CH₂PPh₂) (2) were prepared from reactions of [(μ-SCH₂)₂Fe₂(CO)₆]₂(NCH₂CH₂N) with Ph₂PCH₂CH₂CH₂PPh₂ (dppp) or Ph₂PCH₂CH₂CH₂CH₂PPh₂ (dppb) in the presence of the CO-removing agent Me₃NO·2H₂O. Complexes 1 and 2 were characterized by elemental analysis and IR and NMR spectroscopy. In addition, the X-ray structure of 2 showed the molecule to contain a 16 atom macrocycle, which is joined together by an ethylene group and a bidentate ligand dppb.

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