Bis[chloridobis(triphenylphosphine)copper(I)-μ-chlorido]bis(1,2-diaminopropane)copper(II) acetonitrile disolvate

The title complex [systematic name: bis(1,2-diaminopropane-2 kappa N-2,N') di-mu-chlorido-1:2 kappa Cl-2,2:3 kappa Cl-2-dichlorido-1 kappa Cl, 3 kappa Cl-tetrakis(triphenylphosphine)-1 kappa P-2,3 kappa P-2-tricopper(I,II,I) acetonitrile disolvate], [{(Ph3P)(2)Cl2Cu}(2)Cu(C3H10N2)(2)]center dot 2C(2)H(3)N, is a centrosymmetric linear trinuclear mixed-valence copper complex in which the central Cu-II atom is bridged by Cl atoms to the two Cu-I atoms. The coordination geometry is octahedral for Cu-II, with Jahn-Teller elongation of the Cu-Cl bonds, and distorted tetrahedral for Cu-I, with a wide P-Cu-P angle. The diamine ligands are twofold disordered, with occupancy factors of ca 0.6:0.4, and form one N-H center dot center dot center dot Cl hydrogen bond each with a terminal Cl atom.