SYNTHESIS AND STRUCTURE OF A NOVEL BIS (MU-ETA(2)-THIANTHRENE) DISILVER(I) BIS (PERCHLORATE)

A novel bis(thianthrene)disilver(I)bis(perchlorate), [Ag-2(TA)(2)(ClO4 )(2)] (1) (TA = thianthrene), was prepared and characterized by single -crystal X-ray diffraction methods, H-1 and C-13 NMR: IR and UV spectr a analysis. Complex 1 is triclinic, space group <P(1)over bar>, a = 9. 244(1), b = 9.275(1), c = 8.343(2) Angstrom, alpha = 101.22(1)degrees, beta = 110.63(1)degrees, gamma = 97.15(i)degrees, V = 679.8(2) Angstr om(3), Z = 2, R = 0.028 and R-w = 0.042. The silver is tetrahedrally c oordinated to an oxygen of ClO4-, a phenylene ring of one TA, and to t wo sulfur atoms of the other TA. The average distance of silver to the phenylene ring in complex 1 is 2.55 Angstrom. Both H-1 and C-13 NMR S tudies indicate that the silver-phenylene ring bond is broken in aceto ne solution. The complex 1 is an insulator, while the I-2-doped blue c omplex shows a new absorption band at 478 nm and an electric conductiv ity of 5.0 x 10(-4) S cm(-1). (C) 1998 Elsevier Science S.A.