Synthesis, Characterization, and Properties of Supported Tungstozincate Bridged by Co(II) Complex Fragment

IF 3.1 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Research in Chinese Universities Pub Date : 2008-11-01 DOI:10.1016/S1005-9040(09)60002-7

Kun LIU , Jia LI , Hong-bo LIU , Ya-guang CHEN

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引用次数: 2

Abstract

[Co¹¹(phen)₃]₂[{(ZnW₁₂O₄₀)Co¹¹(phen)₂(H₂O)}₂Co¹¹(trien)₂(NaH₂O)₂]·3H₂O was synthesized via hydrothermal technique and characterized with elemental analyses, IR spectroscopy, TGA-DTA, and variable temperature magnetic susceptibility. The compound crystallized in the monoclinic system with the space group P2₁/n, a= 1.8210 nm, b=2.3592 nm, c=2.2932 nm, β=110.31°, V=9.239 nm³, Z=2, R₁=0.0827. The compound consists of two coordination cations, three lattice water molecules, and a macroanion [{(ZnW₁₂W₄₀)Co(phen)₂(H₂O)}₂Co(C₆H₁₈N₄)₂·(NaH₂O)₂]^4- in which each supported Keggin anion [(ZnW₁₂O₄₀Co¹¹(phen)₂(H₂O)]^4- acts as a ligand to coordinate to central bridging Co²⁺ ion via a terminal oxygen atom. Hydrogen bonds are responsible for the construction of 3D architecture of the compound. The compound is paramagnetic with a weak antiferromagnetic interaction(ϑ=−46.796 K).

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Co(II)配合物桥接负载型钨酸盐的合成、表征及性能研究

采用水热法合成了[Co11(phen)3]2[{(ZnW12O40)Co11(phen)2(H2O)}2Co11(trien)2(NaH2O)2]·3H2O，并用元素分析、红外光谱、热重差热分析和变温磁化率对其进行了表征。该化合物在单斜晶系中结晶，空间群为P21/n, a= 1.8210 nm, b=2.3592 nm, c=2.2932 nm， β=110.31°，V=9.239 nm3, Z=2, R1=0.0827。该化合物由两个配位阳离子，三个晶格水分子和一个大阴离子[{(ZnW12W40)Co(phen)2(H2O)}2Co(C6H18N4)2·(NaH2O)2]4-组成，其中每个负载的Keggin阴离子[(ZnW12O40Co11(phen)2(H2O)]4-作为配体，通过末端氧原子与中心桥接Co2+离子配位。氢键负责构建化合物的三维结构。该化合物具有顺磁性和弱反铁磁相互作用(χ =−46.796 K)。

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来源期刊

Chemical Research in Chinese Universities 化学-化学综合

CiteScore

5.30

自引率

6.50%

发文量

152

审稿时长

3.0 months

期刊介绍： The journal publishes research articles, letters/communications and reviews written by faculty members, researchers and postgraduates in universities, colleges and research institutes all over China and overseas. It reports the latest and most creative results of important fundamental research in all aspects of chemistry and of developments with significant consequences across subdisciplines. Main research areas include (but are not limited to): Organic chemistry (synthesis, characterization, and application); Inorganic chemistry (bio-inorganic chemistry, inorganic material chemistry); Analytical chemistry (especially chemometrics and the application of instrumental analysis and spectroscopy); Physical chemistry (mechanisms, catalysis, thermodynamics and dynamics); Polymer chemistry and polymer physics (mechanisms, material, catalysis, thermodynamics and dynamics); Quantum chemistry (quantum mechanical theory, quantum partition function, quantum statistical mechanics); Biochemistry; Biochemical engineering; Medicinal chemistry; Nanoscience (nanochemistry, nanomaterials).