Syntheses, Crystal Structures, and Photocatalytic Properties of a Series of Mercury Thioantimonates Directed by Transition Metal Complexes

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• 作者：Cheng-Yang Yue ; Xiao-Wu Lei ; Rui-Qiu Liu ; Hui-Ping Zhang ; Xiu-Rong Zhai ; Wen-Peng Li ; Meng Zhou ; Zhi-Fei Zhao ; Yun-Xiang Ma ; Ya-Dong Yang
• 刊名：Crystal Growth & Design
• 出版年：2014
• 出版时间：May 7, 2014
• 年：2014
• 卷：14
• 期：5
• 页码：2411-2421
• 全文大小：625K
• 年卷期：v.14,no.5(May 7, 2014)
• ISSN：1528-7505

文摘

With different transition metal (TM) complexes as structure-directing agents or structure-building units, a series of new mercury thioantimonates with abundant architectures ranging from one-dimensional (1D) ribbons to two-dimensional (2D) layers have been solvothermally synthesized and structurally characterized. Compounds [Co(en)₃]Hg₂Sb₂S₆ (1) (en = ethylenediamine) and [Ni(1,2-dap)₃]₂HgSb₃S₇Cl (2, 1,2-dap = 1,2-diaminopropane) contain a discrete 2D [Hg₂Sb₂S₆]_n^{2n鈥?/sup> layer and 1D [HgSb₃S₇]_n3n鈥?/sup> chain, respectively. Compounds [Ni(1,2-dap)₃]HgSb₂S₅ (3) and [Mn(dien)₂]HgSb₂S₅ (4, dien = diethylenetriamine) feature distinct 2D [HgSb₂S₅]_n2n鈥?/sup> layer and 1D [HgSb₂S₅]_n2n鈥?/sup> ribbon, respectively, whereas the 1D [HgSb₂S₅]_n2n鈥?/sup> chains are attached by [TM(tren)]2+ complexes via TM鈥揝 bonds to form 1D {[TM(tren)]HgSb₂S₅}_n ribbons in compounds [TM(tren)]HgSb₂S₅ (TM = Mn (5), Fe (6), Co (7), tren = tris(2-aminoethyl)amine). Compounds [TM(dien)₂]Hg₃Sb₄S₁₀ (TM = Mn (8), Co(9), Ni(10)) feature 2D [Hg₃Sb₄S₁₀]_n2n鈥?/sup> anionic layers separated by [TM(dien)₂]2+ cations. The most interesting structural feature of these compounds is the presence of three different types of coordination environments of Hg centers including linear [HgS₂] unit, [HgS₃] triangle, and [HgS₄] tetrahedron. The optical properties and thermal stabilities of the title compounds were studied by UV鈥搗is spectra and thernogravimetric analyses, respectively. The photocatalytic experiments indicated that 3, 4, and 10 were able to degrade rhodamine B (RhB) under visible irradiation.}