[Zn(DMF)_6]H_2SiW_(12)O_(40)·(CH_3)_2NH的合成,晶体结构及性质  

Synthesis, Crystal Structure and Properties of H2SiW12O40·(CH3)2NH

作　　者：王敬平[1] 吴强[1] 牛景扬[1] 

机构地区：[1]河南大学化学化工学院,开封475001

出　　处：《无机化学学报》2002年第9期957-960,共4页Chinese Journal of Inorganic Chemistry

基　　金：河南省杰出青年基金(No.004031800);河南省自然科学基金资助项目(No.004040300)。

摘　　要：The title compound H2SiW12O40·(CH3)2NH was synthesized in mixed solvent of aqueous and acetonitrile, and its crystal structure had been determined using single crystal X ray diffraction. The crystal belongs to monoclinic, space group C2/m, a=2.0654(4)nm, b=1.3306(3)nm, c=1.3194(3)nm, β=119.59(3)°, V=3.1531(11)nm3, Dc=3.606Mg·m-3, Z=2, R=0.0462, Rw=0.0836. The title compound comprises of a 2+ unit, a polyanion and a free (CH3)2NH molecule. The ESR spectrum of the title compound shows that charge transfer between organic groups and polyanion takes place under irradiation of the sunlight in solid state. The TG study of the title compound shows that it had four stages of the weight loss, and the increase of the decomposition temperature for the polyanion shows that the stability of the polyanion was enhanced due to the influence of Zn2+ ion. CCDC:175866.The title compound H2SiW12O40·(CH3)2NH was synthesized in mixed solvent of aqueous and acetonitrile, and its crystal structure had been determined using single crystal X ray diffraction. The crystal belongs to monoclinic, space group C2/m, a=2.0654(4)nm, b=1.3306(3)nm, c=1.3194(3)nm, β=119.59(3)°, V=3.1531(11)nm3, Dc=3.606Mg·m-3, Z=2, R=0.0462, Rw=0.0836. The title compound comprises of a 2+ unit, a polyanion and a free (CH3)2NH molecule. The ESR spectrum of the title compound shows that charge transfer between organic groups and polyanion takes place under irradiation of the sunlight in solid state. The TG study of the title compound shows that it had four stages of the weight loss, and the increase of the decomposition temperature for the polyanion shows that the stability of the polyanion was enhanced due to the influence of Zn2+ ion. CCDC:175866.

关 键 词：复合物 杂多化合物 多金属氧酸盐 [Zn(DMF)6]H2SiW12O40·(CH3)2NH 合成 晶体结构 性质 

分 类 号：O614.241[理学—无机化学] O641.4[理学—化学]