Synthesis of Iron and Cobalt Complexes of a Ferrocene-Linked Diphosphinoamide Ligand and Characterization of a Weak Iron–Cobalt Interaction


A ferrocene-based bis­(phosphinoamine) fc­(NHP<sup><i>i</i></sup>Pr<sub>2</sub>)<sub>2</sub> has been deprotonated and used in salt metathesis reactions to form dimeric complexes ([fc­(NP<sup><i>i</i></sup>Pr<sub>2</sub>)<sub>2</sub>]­M)<sub>2</sub> (M = Fe, Co). A novel coordination environment for Co­(II) is observed including a weak but significant Fe–Co interaction, which was characterized using X-ray crystallography, Mössbauer spectroscopy, and VT-magnetometry. Density functional theory (DFT) calculations including natural bond order analysis provides further support for the interaction and suggests a combination of Fe → Co and Co → Fe interactions

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This paper was published in FigShare.

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