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Syntheses and lyotropic liquid crystal properties of a series of sandwich-type tungstoarsenates heteropoly compounds with As/W ratio of 4/30
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作者 Rudan Huang Lihua Bi +3 位作者 Enbo Wang Baoli Fei Lin Xu Changwen Hu 《Chinese Science Bulletin》 SCIE EI CAS 1999年第21期1964-1967,共4页
A series of sandwich-type tungstoarsenates heteropoly compounds with As/W ratio of 4/30, Na16[As4W30M4(H2O)2O112]·XH2O (M = Zn,Cu,Co,Ni,Mn and Cd), have been synthesized for the first time and structurally charac... A series of sandwich-type tungstoarsenates heteropoly compounds with As/W ratio of 4/30, Na16[As4W30M4(H2O)2O112]·XH2O (M = Zn,Cu,Co,Ni,Mn and Cd), have been synthesized for the first time and structurally characterized by elemental analysis, IR and 183W NMR spectra. The crystal structure of Na16[As4W30Cu4(H2O)2O112]·63H2O was determined to be a triclinic system, of P1 symmetry, a = 1.2721(3) nm, b = 2.451 6(5) nm, c = 2.6450(5) nm, 展开更多
关键词 tungstoarsenate HETEROPOLY COMPOUNDS synthesis LYOTROPIC liquid crystal.
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A New Organic-inorganic Hybrid Arsenatotungstate[{Cu(phen)(en)}{Cu(phen)}{Cu_3(phen)_3(α-AsW_9O_(33))}](OH)·3H_2O
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作者 LI Jie TIAN Shu-Fang +1 位作者 ZHOU Hui MA Peng-Tao 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第8期1247-1252,共6页
A new organic-inorganic hybrid copper-substituted arsenatotungstate complex formulated as [{Cu(phen)(en)} {Cu(phen)} {Cu3(phen)3(α-AsW9033)}](OH)·3H2O (1, en = ethylene-diamine, 1,10-phen = 1,10-phe... A new organic-inorganic hybrid copper-substituted arsenatotungstate complex formulated as [{Cu(phen)(en)} {Cu(phen)} {Cu3(phen)3(α-AsW9033)}](OH)·3H2O (1, en = ethylene-diamine, 1,10-phen = 1,10-phenanthroline) has been synthesized by controlling the reaction process and characterized by infrared (IR) spectroscopy, elemental analysis, and thermogravimetric (TG) analysis. Crystal data for 1: C62H56AsCusN12O37W9, Mr=3608.46, monoclinic, space group P21/n, a = 13.245(4), b = 25.692(9), c = 24.670(8) A, fl = 99.251(6)°, V= 8286(5) A3, Z = 4, GOOF = 1.103, R = 0.0560, wR = 0.1285. In 1, the vacant sites of the trivacant Keggin anion [α-AsW9O33]9- are occupied by three same copper coordination cations [Cu(phen)]2+. Meanwhile, the lacunary anion [α-AsWgO33]9-, is capped by two kinds of copper coordination cations [Cu(phen)]2+ and [Cu(Dhen)(en)]2+, resulting in an unorecedented Dolvcation structure with Cs svmmetrv. 展开更多
关键词 tungstoarsenate hydrothermal crystal structure
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