Copper(I) halide pi-complexes with diallylamine of the extreme stoichiometry. The peculiarities of synthesis and crystal structure of 3CuX center dot(C3H5)(2)NH (X = Cl, Br)

By alternating current electrochemical synthesis, orthorhombic crystals of 3CuCl .(C3H5)(2)NH (I) and 3CuBr(0.84)Cl(0.16).(C3H5)(2)NH (II) pi-complexe s with unusually high ratio CuX:diallylamine were obtained. The isostructur al compounds were X-ray structurally characterized on single crystals. Mole cule of diallylamine attaches to three copper(I) atoms of the same inorgani c fragment. Copper atoms have different coordination spheres: Cu(1) possess es trigonal planar coordination formed by two halide atoms and C=C bond, th e similar Cu(2) environment is completed by an additional halide atom to a trigonal pyramid, whereas Cu(3) is surrounded tetrahedrally by three halide atoms and one nitrogen atom. The effective atomic charges in I were calcul ated.