Bis[μ-N,N'-bis(2,6-diisopropylphenyl)ethene-1,2-diamido]-1, 4(η2);1:2κ4 N:N;3:4κ4 N:N-bis(diethyl ether)-1κO,4κO-di-μ- ydrido-2: 3κ4 H:H-2,3-dichromium(II)-1,4-dilithium(I) pentane hemisolvate

Abstract

The title compound, [Cr2Li2(C26H 36N2)2(μ-H)2(C4H 10O)2]·0.5C5H12, is a binuclear chromium complex bridged by two hydrogen atoms. Each chromium atom is coordinated in a distorted square-planar geometry by one chelating bis-(2,6-diisopropyl-phen-yl) ethene-1,2-diamido ligand via its two N atoms. Additionally, two diametrically opposed lithium ether adducts coordinate in an η4 mode on the backbone of the ligands. There is a crystallographic inversion center in the middle of the Cr2H2 ring. One of the isopropyl groups is disordered over two positions in a 0.567 (7):0.433 (7) ratio. Disorder is also observed in the pentane hemisolvate molecule.