CRYSTAL-STRUCTURE OF AN AMMONIUM DITHIOCYANATOCUPRATE(I) COMPLEX WITH18-CROWN-6, [NH4(18-CROWN-6)(CU(NCS)(2))] OBTAINED FROM ZERO VALENT METAL

The new macrocyclic dithiocyanatocuprate(I) complex [NH4(18-crown-6){C u(NCS)(2)}] has been prepared using a direct method of interaction and characterized by X-ray crystallography (orthorhombic, space group Cmc 2(1), with a = 12.453(2), b = 21.650(4), c = 8.151(2) Angstrom, V = 21 97.6(8) Angstrom(3), Z = 4, R1(F) = 0.054; wR2(F-2) = 0.141 for 972 un ique reflections with I > 2 sigma(I) and R1(F) = 0.082; wR2(F-2) = 0.2 10 for all 1098 unique reflections). The lattice comprises complex cat ions [NH4(18-crown-6)](+) and infinite polymeric anions [Cu(NCS)(2)](- ) of a one-dimensional zig-zag structure. The copper atoms adopt three -fold coordination [CuN2S] (Cu-N 1.89(1), 1.90(1)Angstrom Cu-S 2.278(4 ) Angstrom).