Syntheses, structures and optical nonlinearities of heteroselenometallic W-Se-Cu cluster compounds containing bridging phosphane ligands

Zhan Yu, Qian Feng Zhang*, Yinglin Song, Wai Yeung Wong, Alexander Rothenberger, Wa Hung Leung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Treatment of [Et4N]2[WSe4] with the trinuclear trigonal-bipyramidal copper(I) complexes [Cu33-X)2(μ-L)3]X [X = I, L = bis(diphenylphosphanyl)methane (dppm) (1a); X = CI, L = bis(diphenylphosphanyl) amine (dppa) (1b)] affords the tetranuclear cluster compounds [(μ3-WSe4)Cu3(μ-X)(μ-L)2] [X = I, L = dppm (2a); X = CI, L = dppa (2b)], which exhibit an open butterfly configuration. Interaction of [Et4N]2[WSe4] with [Cu(MeCN)4][PF6] and L gives the pentanuclear cluster compounds [(μ4-WSe4)Cu4(μ-L) 4][PF6]2 [L = dppm (3a), dppa (3b)] which contain an open co-planar WCu4 core. The solid-state structures of cluster compounds 2a, 2b, and 3a have been established by X-ray crystallography. The nonlinear optical properties of 2a and 3a have been examined by z-scan techniques with 7-ns pulses at 532 nm. The pentanuclear co-planar cluster 3a exhibits a large optical limiting effect (the limiting threshold is about 0.40 J cm-2).

Original languageEnglish (US)
Pages (from-to)2189-2197
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Issue number15
DOIs
StatePublished - Jun 27 2007

Keywords

  • Cluster compounds
  • Copper
  • Heterometallic complexes
  • Nonlinear optical properties
  • Selenium

ASJC Scopus subject areas

  • Inorganic Chemistry

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