Hydrothermal Synthesis and Characterization of POM-based Supramolecular Complexes with Mixed Ligands

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (3): 673.

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Hydrothermal Synthesis and Characterization of POM-based Supramolecular Complexes with Mixed Ligands

DU Cheng-Bo, WANG Chun-Ling, FENG Su-Jiao, REN Yuan-Hang, KONG Zu-Ping, YUE Bin*, HE He-Yong*

Received:2010-09-28 Revised:2010-12-03 Online:2011-03-10 Published:2011-02-23
Contact: HE He-Yong;YUE Bin E-mail:heyonghe@fudan.edu.cn;yuebin@fudan.edu.cn
Supported by:
国家自然科学基金(批准号: 20633030, 20721063, 20873027)、国家“九七三”计划项目(批准号: 2009CB623506)、国家“八六三”计划项目(批准号: 2009AA033701)、上海市重点学科建设项目(批准号: B108)和上海市优秀学科带头人计划(批准号: 10XD1400300)资助.

Abstract

Abstract: Four POM-based coordination polymers with mixed 4,4’-bipy and 2,2’-bipy/phen, [Cu(4,4’-bipy)(2,2’-bipy)2]2[SiW12O40]?4H2O (1), [Ag4(4,4’-bipy)3(2,2’- bipy)2][SiW12O40]?2H2O (2), [Cu(4,4’-bipy)(phen)]2[H3O]2[SiW12O40]?8H2O (3) and [Cu(4,4’-bipy-Cl)(phen)]2[H3O][PW12O40]?H2O (4) (bipy = bipyridine, phen = phenanthroline), were synthesized under hydrothermal condition and characterized by IR, TG, elemental analysis, and single-crystal X-ray diffraction. Compound 1 is crystallized in the monoclinic system, space group P21/n, with a = 1.2858(4) nm, b = 2.0890(7) nm, c = 1.5580(5) nm, β = 102.306(4)o, V = 4.089(2) nm3, Z = 2, R1 = 0.0451, wR2 = 0.0934. Compound 2 is crystallized in the monoclinic system, space group P21/n, with a = 1.2766(4) nm, b = 2.1258(6) nm, c = 1.4491(4) nm, β = 104.774(4)o, V = 3.803(2) nm3, Z = 2, R1 = 0.0429, wR2 = 0.0730. Compound 3 is crystallized in the monoclinic system, space group C2/m, with a = 1.9850(8) nm, b = 1.4072(6) nm, c = 1.2108(5) nm, β = 110.629(6)o, V = 3.165(2) nm3, Z = 2, R1 = 0.0885, wR2 = 0.1647. Compound 4 is crystallized in the monoclinic system, space group C2/m, with a = 2.0376(7) nm，b = 1.4031(5) nm, c = 1.3784(5) nm, β = 93.502(6)o, V = 3.933(2) nm3, Z = 2, R1 = 0.0561, wR2 = 0.1491. The catalytic activity of these compounds was tested in the epoxidation of styrene and compound 3 and 4 exhibited high conversion of styrene and selectivity to epoxide.

Key words: Hydrothermal synthesis, Mixed ligands, POM-based coordination polymers, Crystal structure, Catalytic activity

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DU Cheng-Bo, WANG Chun-Ling, FENG Su-Jiao, REN Yuan-Hang, KONG Zu-Ping, YUE Bin*, HE He-Yong*. Hydrothermal Synthesis and Characterization of POM-based Supramolecular Complexes with Mixed Ligands[J]. Chem. J. Chinese Universities, 2011, 32(3): 673.

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Hydrothermal Synthesis and Characterization of POM-based Supramolecular Complexes with Mixed Ligands

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