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

Pick FS; Thompson JR; Savard DS; Leznoff DB; Fryzuk MD

Inorganic Chemistry, Vol.55, No.8, 4059-4067, 2016

DOI10.1021/acs.inorgchem.6b00443 Export Citation

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

Pick FS, Thompson JR, Savard DS, Leznoff DB, Fryzuk MD

A ferrocene-based bis(phosphinoamine) fc-((NHPPr2)-Pr-i)(2) has been deprotonated and used in salt metathesis reactions to form dimeric complexes ([fc((NPPr2)-Pr-i)(2)]M)(2) (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, Mossbauer 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.