Chromium-chromium interaction in a binuclear mixed-valent Cri- Crii complex

Abstract

A mixed-valent CrI-CrII binuclear complex, {κ1,κ2,κ3-N,P,P-cyclo[(Ph)PCH2N(CH2Ph)CH2]}2(CrCl2)[Cr(μ-Cl)(AlClMe2)]·4toluene (1), of a P2N2 cyclic ligand was obtained upon treatment of the chromium precursor with alkylaluminum. Complex 1 was accessible from either its trivalent or divalent precursors, and density functional theory calculations revealed the presence of only σ- and ?-orbital interactions in the Cr-Cr bond.