Synthesis, structure, and optical nonlinearity of soluble ternary cadmium copper tellurolate complex [Cd(μ-TeTol)4{Cu(PPh3)2}2] (Tol = 4-tolyl)

Reaction of [Me4N]2[Cd(TeTol)4] (Tol = 4-tolyl) with two equivalents of [Cu(PPh3)2NO3] gave a new soluble tellurolate-bridged heterobimetallic complex of [Cd(μ-TeTol)4{Cu(PPh3)2}2] (1) in which two [Cu(PPh3)2]+ fragments are chelated at opposite edges of a tetrahedral [Cd(TeTol)4]2– moiety via the tellurium atoms. Complex 1 is air and optically stable. The nonlinear optical absorption (α2 = 7.4 × 10–4 cm W–1 mol–1) and refraction (n2 = 2.3 × 10–9 cm2 W–1 mol–1) were determined by z-scan techniques with 7 ns pulses at 532 nm.