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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Pb5Ga6ZnS15: a noncentrosymmetric framework with chains of T2-supertetrahedra
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Pb5Ga6ZnS15: a noncentrosymmetric framework with chains of T2-supertetrahedra

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摘要

A novel noncentrosysmmetric sulfide, Pb5Ga6ZnS15 (1), was synthesized for the first time. Its crystal structure revealed the presence of GaS2(infinity)(-) (chain 1, chains of GaS4(5-) tetrahedra) and Ga4S9(infinity)(6-) (chain 2, chains of T2-supertetrahedra) connected by isolated ZnS4(6-) tetrahedra. Structure correlation with the network constructed solely using chain 1 (Pb(4)Ga(4)GeQ(12)-type) is discussed. Pb5Ga6ZnS15 was calculated to have a suitable static briefringence (Delta n) of 0.1137, and a large nonlinear optical susceptibility d(31) of 58.32 pm V-1 at a wavelength of 2.05 mu m (0.6 eV), much higher than that of the benchmark AgGaS2 (18.14 pm V-1).

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