W/Cu(Ag)/S complexes containing bridging diphosphine ligands: Synthesis,structures and optical properties |
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| Authors: | Li Song Ping Lin Zhi-Hua Li Jian-Rong Li Shao-Wu Du Xin-Tao Wu |
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| Institution: | 1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China;2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, PR China |
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| Abstract: | The substitution reactions of Et4N]2WOS3MCN] (M = Cu, Ag) with dppe (dppe = 1,2-bis(diphenylphosphino) ethane) in DMF afforded a tetranuclear cluster Et4N]2WOS3Cu(dppe)]2 · H2O (1) and a polymer WEE′S2Ag(dppe)]2 · CH3CN (3) (E = 0.636S + 0.364O, E′ = 0.581O + 0.419S), respectively. Treatment of 1 with AgI at elevated temperature yielded polymeric complex WS4Cu2(dppe)2]n (2). X-ray single crystal structural analyses revealed that in both 1 and 2, the W/Cu/S cluster units are linked by two dppe ligands to form a 10-membered –Cu–P–C–C–P–]2 ring. In the polymeric structure of 2, the W and Cu atoms form a helical chain whereas in 3 the cluster units (WEE′S2Ag) are bridged by dppe ligands affording a zig-zag chain structure. The optical absorption spectra and the solid-state photoluminescent properties of the title complexes are also studied. |
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| Keywords: | Heterothiometalates Polymer Optical property Diphosphine Crystal structure |
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