TY - JOUR
T1 - Syntheses, structures and optical nonlinearities of heteroselenometallic W-Se-Cu cluster compounds containing bridging phosphane ligands
AU - Yu, Zhan
AU - Zhang, Qian Feng
AU - Song, Yinglin
AU - Wong, Wai Yeung
AU - Rothenberger, Alexander
AU - Leung, Wa Hung
PY - 2007
Y1 - 2007
N2 - Treatment of [Et4N]2[WSe4] with the trinuclear trigonal-bipyramidal copper(I) complexes [Cu3(μ 3-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).
AB - Treatment of [Et4N]2[WSe4] with the trinuclear trigonal-bipyramidal copper(I) complexes [Cu3(μ 3-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).
KW - Cluster compounds
KW - Copper
KW - Heterometallic complexes
KW - Nonlinear optical properties
KW - Selenium
UR - http://www.scopus.com/inward/record.url?scp=34250696958&partnerID=8YFLogxK
U2 - 10.1002/ejic.200601114
DO - 10.1002/ejic.200601114
M3 - Article
AN - SCOPUS:34250696958
SN - 1434-1948
SP - 2189
EP - 2197
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 15
ER -