Abstract
A new cluster compound WCu3OS3(PPh3)(3){S2P(OPr2i)(2)}, prepared by reacting (NH4)(2)WOS3 with PPh3 and [CuS2P(OPr2i)(2)], was characterized by elemental analysis, i.r. spectroscopy and X-ray crystallography. The structure consists of a tetra-nuclear distorted tetragonal core with one W atom coordinated by one O atom, three mu(3)-S and three Cu atoms. Anisotropic refinement for all nonhydrogen atoms yielded the value R = 0.0718. Investigation of third-order optical nonlinearity using the Z-scan technique shows that the cluster compound exhibits good nonlinear properties with alpha(2) values of 1.23 x 10(-10) m w(-1) and n(2) values of -9.3 x 10(-18) m(2) w(-1) respectively.