Crystal structures and non-linear optical properties of cluster compounds [MAu2S4(AsPh3)2] (M = Mo or W) †
- 1 January 1997
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 13,p. 2357-2362
- https://doi.org/10.1039/a608190h
Abstract
The compounds [MAu 2 S 4 (AsPh 3 ) 2 ] (M = Mo 1 or W 2) were synthesized by reactions of [NEt 4 ] 2 [MS 4 ] (M = Mo or W), HAuCl 4 ·4H 2 O and AsPh 3 in CH 2 Cl 2 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 α 2 = 7.9 × 10 -5 and 13 × 10 -5 dm 3 cm W -1 mol -1 and n 2 = -8.0 × 10 -10 and 19 × 10 -10 dm 3 cm 2 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.Keywords
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