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DOI: 10.1039/A608190H (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 2357-2362

Crystal structures and non-linear optical properties of cluster compounds [MAu2S4(AsPh3)2] (M = Mo or W)[hair space]†

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He-gen Zheng, Wei Ji, Michael L. K. Low, Genta Sakane, Takashi Shibahara and Xin-quan Xin

Abstract

The compounds [MAu2S4(AsPh3)2] (M = Mo 1 or W 2) were synthesized by reactions of [NEt4]2[MS4] (M = Mo or W), HAuCl4·4H2O and AsPh3 in CH2Cl2 solution. X-Ray crystallographic structure determinations show that the co-ordination of Mo(W) is slightly distorted from tetrahedral and those of the Au are distorted from trigonal planar. High non-linear susceptibilities of these gold-containing clusters were also observed for the first time. Z-Scan data measured with 532 nm nanosecond laser pulses showed that effective third-order non-linearities α2 = 7.9 × 10 -5 and 13 × 10-5 dm3 cm W-1 mol-1 and n2 = -8.0 × 10-10 and 19 × 10-10 dm3 cm2 W-1 mol-1, respectively, for a 0.64 mmol dm-3 solution of compound 1 and a 0.54 mmol dm-3 solution of 2.

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