Copper(I) Complexes with N -Allylquinolinium Bromide [C 9 H 7 N(C 3 H 5 )]CuBr 2 and [C 9 H 7 N(C 3 H 5 )]Cu 2 Br 3 : Synthesis and Crystal Structure

Abstract

Crystals of [С9Н7N(С3Н5)]СuBr2 (IV) and [С9Н7N(С3Н5)][Сu2Br3] (V) were prepared by ac electrochemical synthesis from СuBr2, N-allylquinolinium bromide, on copper electrodes in the ethanol–benzene medium. X-ray diffraction study has shown that crystals IV and V are monoclinic: space group A21/a, a = 13.776(3) A, b = 14.304(3) A, c = 13.147(2) A, γ = 107.90(1) A, V = 2465(2) A3, Z = 8 for IV and space group P21/n, a = 13.881(2) A, b = 15.446(2) A, c = 7.111(1) A, β = 104.64(1)°, V = 1475.0(8) A3, Z = 4 for V. Structures IV and V are built of the N-allylquinolinium cations and different anions i.e., (CuBr2)n-n forming infinite chains in IV and peculiar {[CuI4Br6]2–}n arranged in polymeric chains in V. In the latter case, two independent metal atoms have trigonal–pyramidal and trigonal–planar environments. In the structures of both compounds, the C=C bond of the allyl group is not involved in coordination with the Cu(I) atom.