AN S-CENTER-DOT-CENTER-DOT-CENTER-DOT-S CONTACT ASSEMBLED TETRANUCLEAR COPPER(I) COMPLEX WITH SULFUR-RICH LIGAND, 4,5-ETHYLENEDITHIO-1,3-DITHIOLE-2-THIONE

A copper(I) complex with 4,5-ethylenedithio-1,3-dithiole-2-thione (C5H 4S5), [Cu4I4(C5H4S5)(4)]infinity was synthesized and the molecular str ucture and packing were characterized crystallographically. The metal center is a stepped Cu4I4 core coordinated by two ligands C5H4S5 in di fferent ways. One is bidentate coordinated through the thiocarbonyl gr oup and the thioether group and the other is monodentate coordinated o nly through thiocarbonyl group. The Cu4I4 clusters are bridged by bide ntate C5H4S5 molecules to form one-dimensional polymeric chains along the c-axis, and these chains form a three-dimensional network linked b y interchain S ... S contacts. The shortest S ... S contact distance i s 3.257(2) Angstrom. A crystal of the complex is triclinic with space group P (1) over bar, a=11.350(5) Angstrom, b=11.854(3) Angstrom, c=9. 275(5) Angstrom, alpha=97.32(4)degrees,beta=112.35(4)degrees, gamma=67 .67(2)degrees, V=1067.0(9) Angstrom(3), Z=2, R=0.034, R-w=0.051.