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- W1969084477 abstract "Abstract The cluster compounds, [MoAu 2 S 4 (PPh 2 Py) 2 ] ( 1 ) and [WAu 2 S 4 (PPh 2 Py) 2 ] ( 2 ), were synthesized by the reaction of (NH 4 ) 2 MS 4 (M = Mo, W), H[AuCl 4 ]·4H 2 O and diphenyl‐2‐pyridyl‐phosphine (PPh 2 Py) in CH 2 Cl 2 solution. [MoAu 2 S 4 (PPh 2 Py) 2 ] crystallizes in the monoclinic space group P2 1 /c with a = 18.385(2), b =12.304(1), c = 16.904(2) Å, β =110.722(2)°, and Z = 4. [WAu 2 S 4 (PPh 2 Py) 2 ] crystallizes in the triclinic space group P‐1 with a = 9.333 (3), b = 10.628(3), c = 19.566(6) Å, α = 89.26(1), β = 80.87(1), γ = 68.85(1)°, and Z = 2. Single crystal X‐ray analysis showed that these two compounds are isostructural, but belong to different space groups. The Mo (W) atom has a slightly distorted tetrahedral coordination, and the two Au atoms are distorted from trigonal planar, the P—Au—M—Au—P chain is nearly linear. Measurement of the nonlinear optical (NLO) properties using the Z‐scan technique with an 8‐ns pulsed laser at 532 nm showed that 1 and 2 possess NLO absorption and effective self‐focusing effect. The effective α 2 and n 2 values of cluster 1 are 5.89 × 10 —12 m · W —1 and 6.45 × 10 —18 m 2 · W —1 ; the effective α 2 and n 2 values of compound 2 are 4.35 × 10 —11 m · W —1 and 3.73 × 10 —17 m 2 · W —1 ." @default.
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- W1969084477 date "2004-12-17" @default.
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- W1969084477 title "Syntheses, Crystal Structures and Non-linear Optical Properties of Cluster Compounds [MoAu2S4(PPh2Py)2] and [WAu2S4(PPh2Py)2]" @default.
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- W1969084477 doi "https://doi.org/10.1002/zaac.200400406" @default.
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