Synthesis, Crystal Structure and Third-order Nonlinear Optical Properties of Nest-shaped Cluster [CuBr(bpy)2] [MoOS3Cu3-Br2(bpy)]

✍ Scribed by Ying-Lin Song; Hong-Wei Hou; Yao-Ting Fan; Chen-Xia Du; Yu Zhu

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 298 KB
• Volume: 19
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.20010190311

✦ Synopsis

Abstract

Nest‐shaped cluster [CuBr(bpy)~2~][MoOS~3~Cu3Br~2~(bpy)] was synthesized by the treatment of (NH~4~)~2~ MOO~2~S~2~, CuBr and Et~4~NBr with bpy (2,2′‐bipyridyl) in CH~3~CN. Its structure has been characterized by X‐ray diffraction; monoclinic, space group __P__2~1~/n ‐ with a = l.0092(4), b = 2.6347(7), c = 1.4087(3) nm, β = 91.744(9)°, V = 3.7438 nm^3^, Z=4, and final R = 0.051, R~w~ = 0.053. It consists of two parts: nest‐shaped structural unit [MoOS~3~Cu~3~Br~2~(bpy)] and complex ion [CuBr(bpy)^2^]^+^. We determined its third‐order nonlinear optical (NLO) properties with a 7‐ns pulsed laser at 532 nm. The duster exhibits strong NLO refractive behavior, its third‐order susceptibility χ^(3)^ was calculated to be 2.7 · 10^−11^ esu in a 7.8 · 10^−4^ g/cm^3^ DMF solution. The value is comparable to those of inorganic dusters.