HOMOLEPTIC COPPER(I) AND SILVER(I) COMPLEXES WITH O-PHENYLENE-BACKBONED BIS(THIOETHERS), BIS(SELENOETHERS), AND BIS(TELLUROETHERS) - SYNTHESIS, MULTINUCLEAR NMR STUDIES, AND CRYSTAL STRUCTURES OF [CU(O-C6H4(SEME)(2))(2)]PF6, [CU(O-C6H4(TEME)(2))(2)]P

摘要

Homoleptic copper(I) and silver(I) complexes [M(L-L)(2)]X (M = Cu, X = PF6; M = Ag, X = BF4; L-L = o-C6H4(EMe)(2); E = S, Se, Te) have been prepared and characterized by analysis, FAB mass spectrometry, and multinuclear NMR spectroscopy (H-1, Se-77, Te-125, Cu-63, Ag-109). Variable-temperature NMR studies have been used to probe various exchange processes occurring in solution. Single-crystal X-ray structural studies show that the Cu(I) complexes Cu{o-C6H4(SeMe)(2)}(2)]PF6 [trigonal, a 13.29(2), c = 65.97(2) Angstrom, R(3) over barc