Abstract
Two isostructural crown-like heteroselenometallic cluster compounds, [Et4N]4[(μ5-WSe4)(CuX)5(μ-X)2] (X = Cl 1, Br 2), were prepared from the reactions of [Et4N]2[WSe4] with CuX and [Et4N]X· xH2O in the presence of 2-picoline and characterized by single-crystal diffraction analysis. The [(μ5-WSe4)(Cu-X)5(μ-X)2]4− anions in the cluster compounds consists of five CuX fragments coordinated to the five edges of the tetrahedral [WSe4]2− moiety along with two bridging halides connected to each of the two pairs of the symmetric copper atoms, exhibiting a novel crown-like core structure. The nonlinear optical absorption and refraction of cluster compound 2 were determined to be α2 = 6.15 × 10−10 m/W and n 2 = 4.18 × 10−11 esu, respectively.
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Acknowledgments
This project was supported by the Natural Science Foundation of China (grant no. 90301005) and the Hong Kong Research Grants Council. Dr. Q. -F. Zhang thanks Science and Technological Fund of Anhui Province for Outstanding Youth (grant no. 06046100) and the Alexander von Humboldt Foundation for the assistance. We are grateful to Prof. D. Fenske for generous support of our research activities.
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Miao, S., Yu, Z., Zhang, QF. et al. Syntheses, Structures, and Nonlinear Optical Properties of Two Crown-like Heteroselenometallic Compounds [Et4N]4[(μ5-WSe4)(CuX)5(μ-X)2] (X = Cl, Br). J Clust Sci 17, 495–507 (2006). https://doi.org/10.1007/s10876-006-0073-x
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DOI: https://doi.org/10.1007/s10876-006-0073-x