Syntheses, Structures, and Nonlinear Optical Properties of Heteroselenometallic W-Se-Ag Cluster Compounds Containing Phosphine Ligands
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- 作者：Qian-Feng Zhang ; Jihai Ding ; Zhan Yu ; Yinglin Song ; Alexander Rothenberger ; Dieter Fenske ; Wa-Hung Leung
- 刊名：Inorganic Chemistry
- 出版年：2006
- 出版时间：October 16, 2006
- 年：2006
- 卷：45
- 期：21
- 页码：8638 - 8647
- 全文大小：310K
- 年卷期：v.45,no.21(October 16, 2006)
- ISSN：1520-510X
文摘
Treatment of [Et4N]2[WSe4] with a 1:1 mixture of AgNO3 and PCy3 (Cy = cyclohexyl) in the absence of iodideafforded a linear trinuclear compound [(
-WSe4)(AgPCy3)2] (1). A similar reaction in the presence of iodide gaverise to the isolation of the cubanelike compound [(3-WSe4)Ag3(PCy3)3(3-I)] (2). Treatment of [Et4N]2[WSe4] withAgI in the presence of bidentate phosphine ligands bis(diphenylphosphino)amine (dppa) and bis(diphenylphosphino)methane (dppm) afforded the tetranuclear compounds [(3-WSe4)Ag3(-I)(-dppa)2] (3) and [(3-WSe4)Ag3(3-I)(-dppm)2] (4), respectively, which exhibit an open butterfly configuration. A novel hexanuclear cluster compound[(3-WSe4)2Ag4(-dppm)3] (5) was obtained from interaction of [Et4N]2[WSe4] with AgNO3 and dppm in the absenceof iodide source. The above cluster compounds are electrically neutral and air-stable in both solution and the solidstate and have been characterized by electronic, infrared, mass, and NMR spectroscopies. The solid-state structuresof five cluster compounds have been established by X-ray crystallography. The nonlinear optical properties ofcompounds 4 and 5 were examined by z-scan techniques with 7 ns pulses at 532 nm. The optical limiting effectsof compounds 1, 2, 4, and 5 were determined and compared with related argentoselenometallic compounds.
-WSe4)(AgPCy3)2] (1). A similar reaction in the presence of iodide gaverise to the isolation of the cubanelike compound [(3-WSe4)Ag3(PCy3)3(3-I)] (2). Treatment of [Et4N]2[WSe4] withAgI in the presence of bidentate phosphine ligands bis(diphenylphosphino)amine (dppa) and bis(diphenylphosphino)methane (dppm) afforded the tetranuclear compounds [(3-WSe4)Ag3(-I)(-dppa)2] (3) and [(3-WSe4)Ag3(3-I)(-dppm)2] (4), respectively, which exhibit an open butterfly configuration. A novel hexanuclear cluster compound[(3-WSe4)2Ag4(-dppm)3] (5) was obtained from interaction of [Et4N]2[WSe4] with AgNO3 and dppm in the absenceof iodide source. The above cluster compounds are electrically neutral and air-stable in both solution and the solidstate and have been characterized by electronic, infrared, mass, and NMR spectroscopies. The solid-state structuresof five cluster compounds have been established by X-ray crystallography. The nonlinear optical properties ofcompounds 4 and 5 were examined by z-scan techniques with 7 ns pulses at 532 nm. The optical limiting effectsof compounds 1, 2, 4, and 5 were determined and compared with related argentoselenometallic compounds.© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |