Synthesis, Crystal Structure and Photoluminescent Property of a Novel Disilver Complex with Pyrazinyl Oxime Ligand

A novel binuclear Ag(I) complex [Ag-2(C6H6N3O)(2)(C6H7N3O)(2)]center dot 2CH(3)CN (1) was synthesized by the evaporation reaction of silver nitrate and (E)-1-(pyrazin-2-yl)ethanone oxime (HL). The complex was characterized by elemental analysis, IR spectrum and X-ray single-crystal diffraction analysis. It crystallizes in the monoclinic space group C2/c with a = 22.7089(3), b = 11.5443(7), c = 16.1468(4) angstrom, beta = 127.7150(10)degrees, V = 3348.6(2) angstrom(3), D-c = 1.675 g/cm(3), M-r = 844.42, Z = 4, F(000) = 1696.0, mu = 1.226 mm(-1), the final R = 0.0250 and wR = 0.070. The coordination around the silver(I) atom is a distorted trigonal-bipyramidal geometry involving one protonated pyrazinyl oxime ligand (HL), one deprotonated oxime ligand (E) and one CH3CN solvate molecule in the asymmetric unit of complex 1.