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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)

Abstract

Treatment of [Et4N]2[WSe4] with the trinuclear trigonal-bipyramidal copper(I) complexes [Cu3(μ3-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 WCu4core. 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). KGaA, 2007.
Original languageEnglish
Pages (from-to)2189-2197
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Issue number15
DOIs
Publication statusPublished - 27 Jun 2007
Externally publishedYes

Keywords

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

ASJC Scopus subject areas

  • Inorganic Chemistry

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