Synthesis and Structural Comparison for a Series of Cr(II) (iodo) NacNac Complexes

Abstract

AbstractA series of complexes of the form [bis(2,6-diisopropylphenyl)pentane-2,4-ketiminato](iodo)(solvent) chromium were synthesized and structurally characterized (solvent = tetrahydrofuran, acetonitrile, α-picoline). The tetrahydrofuran adduct crystallized in the P2 1 /n space group with the crystal cell parameters a = 17.628(6) A, b = 10.218(3) A, c = 20.646(7) A, β = 109.209(4)°, V = 3512(2) A 3 and Z = 4. The acetonitrile adduct crystallized in the P2 1 /c space group with the crystal cell parameters a = 16.104(7) A, b = 11.965(5) A, c = 18.201(8) A, β = 116.091(6)°, V = 3150(2) A 3 and Z = 4. The α-picoline adduct crystallized in the C2/c space group with the crystal cell parameters a = 39.982(9) A, b = 11.637(2) A, c = 16.560(4) A, β = 108.085(4)°, V = 7325(3) A 3 and Z = 8. For each compound, the coordination around each chromium center is square planar with varying degrees of distortion.Graphical AbstractA series of Cr(II) complexes of the form LCrI(S) (where L = nacnac = β-diketiminate; S = solvent) were synthesized and structurally characterized.[IMAGE]