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[Zn(DMF)6]H2SiW12O40·(CH3)2NH的合成,晶体结构及性质 总被引:1,自引:0,他引:1
The title compound [Zn(DMF)6]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 [Zn(DMF)6]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 de-composition temperature for the polyanion shows that the stability of the polyanion was enhanced due to the influence of Zn2+ ion. CCDC:175866. 相似文献
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1INTRODUCTION Contemporary interest in polyoxovanadates re-flects not only their attractive magnetic and electro-nic properties[1~3],but also the complex structural chemistry of vanadium with a variety of coordina-tion geometries and oxidation states[4].Decavana-date is a represent of the fully oxidized isopolyva-nadates.A number of compounds have been repo-rted and characterized[5~9],but it is found now that most of these polyvanadate salts coordinated with metal cations are actually eith… 相似文献
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二茂铁单甲醛和联苯胺反应制备了标题化合物,用元素分析,1H NMR和X射线单晶衍射对其结构进行了表征.结构解析表明,标题化合物属于单斜晶系,P21/n空间群,晶胞参数为:a=0.590 6(2)nm,b=1.116 8(3)nm,c=1.963 9(5)nm,β=92.903(5)°,V=1.293 9(6)nm3,Z=2,Dc=1.479 Mg/m3,μ=1.148mm-1,F(000)=596,R1=0.060 2,wR2=0.126 6.该化合物由两个茂铁彼此通过Sch iff碱桥联,为中心对称,分子内Fe…Fe距离为1.7nm.电化学测量表明,两个茂铁之间的相互作用很弱. 相似文献
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合成了由六次甲基四胺与H 相似文献
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合成了由六次甲基四胺与H3PW12O40·nH2O,H4SiW12O40·nH2O和H4GeW12O40·nH2O 形成的具有非线性光学性质的电荷转移盐,并由元素分析,红外光谱,电子光谱进行了表征。结果表明固体中阴阳离子之间存在强的相互作用;非线性光学性质研究表明,三种电荷转移盐的倍频效应分别为KH2PO4(KDP) 的0 .17 ,0 .25 和0 .06 倍;三阶非线性系数分别为6.2 ×10- 13esu,8 .1 ×10 - 13esu和4 .3 ×10 - 13esu。 相似文献
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以K_8Na_2[A-α-Ge W_9O_(34)]·25H_2O,Co(NO_3)_2·6H_2O和K_2CO_3等为原料,利用常规水溶液法合成了一例基于三缺位Keggin型多金属氧簇{Ge W_9O_(34)}的高核过渡金属衍生物K_(10.5)Cs_4H_(1.5){[Co_8(OH)_6(H_2O)_2](CO_3)_3(Ge W_9O_(34))_2}·12H_2O(1),并通过红外光谱、元素分析、热重分析和X射线单晶衍射等分析手段对其进行了表征。化合物1含有一个V型的多酸阴离子簇{[Co_8(OH)_6(H_2O)_2](CO_3)_3(Ge W_9O_(34))_2}~(16-),该阴离子进一步通过K~+和Cs~+离子连接形成二维结构。磁学性质研究表明,化合物1中Co~(2+)离子之间主要为反铁磁性耦合。 相似文献