Syntheses and Crystal Structures of Three Novel Amino-acid-containing Polyoxomolybdosilicates

被引：0

作者：

高水英

曹荣

李星

林郑忠

机构：

[1] Fuzhou 350002 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China

[2] State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences

[3] State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences

来源：

Chinese Journal of Structural Chemistry | 2006年 / 03期

基金：

中国国家自然科学基金;

关键词：

polyoxometalate; amino acid; crystal structure;

D O I：

10.14102/j.cnki.0254-5861.2006.03.012

中图分类号：

O621.25 [];

学科分类号：

070303 ; 081704 ;

摘要：

Three novel amino acid salts of 12-molybdosilicate formulated (Gly)6H4SiMo12O40? 8H2O 1, K3(HGly)SiMo12O40?4H2O 2 and K2(HGly)2SiMo12O40?9H2O 3 (Gly = NH3CH2COO) were synthesized and characterized by elemental analysis, IR and single-crystal X-ray analysis. Com- pound 1 crystallizes in trigonal, space group R-3 with a = 17.0742(3), b = 17.0742(3), c = 16.792(4) ?, γ = 120o, F(000) = 3474, Mr = 2413.92, Z = 3, V = 4239.4(14) ?3, Dc = 2.837 g/cm3, μ(MoKα) = 2.728 mm–1, the final R = 0.0622, wR = 0.1549 (I > 2σ(I)) and GOF = 1.143. In compound 1, each [SiMo12O40]4– unit is surrounded by six Gly molecules through hydrogen bonding. Compounds 2 and 3 crystallize in monoclinic, space groups P2/c and P21/c, respectively. The pH value of the reaction media plays a crucial role in the formations of the three compounds.

引用

页码：305 / 311

页数：7