STRUCTURE OF A BINUCLEAR RHODIUM(I) COMPLEX WITH THE ACENAPHTHENE- 1,2-DIIMINE LIGAND

Abstract

By the interaction of [Rh2(COE)4(μ-Cl)2] (COE = cyclooctene) with 1,2-bis[(2,6-diisopropyl phenyl)imino]acenaphthene (dpp-bian) new binuclear complex [Rh2(dpp-bian)2(μ-Cl)2]·2.72CH2Cl2 is obtained. The crystal structure is determined by the single crystal X-ray diffraction analysis. Compound 1·2.72CH2Cl2 crystallizes in the orthorhombic crystal system (space group Pnma) with unit cell parameters a = 51.200(3) Å, b = 22.3795(13) Å, c = 12.8631(8) Å, V = 14739.0(16) Å3, R = 0.0536. Each rhodium atom has a distorted square-planar environment formed by two dpp-bian N atoms and two bridging Cl atoms. Density functional theory calculations predict the existence of two isomers of the [Rh2(dpp-bian)2(μ-Cl)2] complex with similar formation energies.