SYNTHESIS AND STRUCTURE INVESTIGATIONS OF IODOCUPRATES (1) .15. IODOCUPRATE(I) WITH SOLVATED CATIONS - [LI(CH3CN)4]INFINITY-1[CU2I3] AND [MG((CH3)2CO)6][CU2I4]

[Li(CH3CN)4]infinity1[Cu2I3] 1 and [Mg((CH3)2CO)6][Cu2I4] 2 were prepared by reactions of Cul with LiI in acetonitrile and of CuI with MgI2 in acetone. 1 crystallizes orthorhombic, Pnma, a = 552.7(2), b = 1 258.8(8), c = 2 516(1) pm, z = 4. [Li(CH3CN)4]+ cations are located between rod packings Of CUI4 tetrahedra double chains infinity1[(CUI2/2I2/4)2]- parallel to the a-axis. Short intermolecular anion/cation contacts were observed. The crystal structure of 2 (monoclinic, P2(1)/n, a = 1 840(2), b = 1 059.2(2), c = 1 879(2) pm, beta = 112.94(4)-degrees, z = 4) is built up by [Mg((CH3)2CO)6]2+ cations forming a simple hexagonal sphere packing. The binuclear anions [CU2I4]2- occupy holes in the trigonal prismatic channels formed by the cations.