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1.
1INTRODUCTION Recently,cyano-bridged lanthanide-transition me-tal complexes have been extensively investigateddue to their potential applications as precursors in the preparation of rare earth orthoferrites,fluores-cent and magnetic materials[1].Various complexes of this system have been obtained in order to ex-plore the relations between structures and pro-perties by using different ligands,such as DMF,4,4?-bipy,and so on,to fill the coordination sites of lanthanide ions[2～9].But up to… 相似文献
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0IntroductionAs the active sites of several mononuclear en-zymes are five-or six-coordinate manganese speciescontaining coordinated carboxylate groups,water andnitrogen-donor molecules research on the coordinationcompounds of manganese with such coligands hasgrown[1,2].There has been extensive interest in man-ganese chemistry due to the involvement of manganesein many biosystems and magnetic materials[3￣5].Theisophthalate as a potential bidentate ligand seemsquite suitable for self-assembly s… 相似文献
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1 INTRODUCTION Polyoxometalates (POMs) are one of the most widely used inorganic components due to their at- tractive electronic and molecular properties with va- rious applications in catalysis, medicine, materials science[1～3] and so on. Exploration of transition me- tal complex cations as well as organic component which functions as ligand as building blocks in the construction of metal oxide composite materials is a fruitful strategy[4, 5]. Among the polyoxometalates studied to dat… 相似文献
4.
1 INTRODUCTION The crystal engineering of inorganic-organic hybrid materials has generated significant interest in their new structural architectures and potential ap- plications in the fields of photochemistry, catalysis, electromagnetism and sorption[1… 相似文献
5.
WEN Yi-Hang ZHANG Jian QIN Ye-Yan LI Zhao-Ji KANG Yao CHEN Yu-Biao CHENG Jian-Kai YAO Yuan-Gen② 《结构化学》2004,(9)
1 INTRODUCTION The increasing interest in inorganic-organic hybrid framework assemblies has resulted in a great number of research efforts focused on the develop- ment of new functional materials possessing various potential applications on catalysis, electrical conduc- tivity and magnetism[1～4]. In recent years, the inter- action of H2pdc with several metal ions has been extensively studied[5, 6] due to its unique ability to form stable chelates in diverse coordination modes such as bid… 相似文献
6.
1 INTRODUCTION Polyoxometalates are the unique metal-oxygen clusters composed of transition metals in groups V and VI (Mo, W, V, Nb, Ta) in a high oxidation state showing a large structural varieties as well as inte- resting physical and chemical properties in diverse fields including catalysis, analytical chemistry, nanotechnology, chemical sensing, biochemical and geochemical processes, medicine and materials science[1～5]. Recently, there has been increasing interest in the synthesis… 相似文献
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YU Miao LIU Shu-xia~ ZHANG Chun-dan GAO Bo SUN Chun-yan XIE Lin-hua WANG Chun-ling CHENG Hai-yan Key Laboratory of Polyoxometalates Science of Ministry of Education College of Chemistry Northeast Normal University Changchun P. R. China 《高等学校化学研究》2006,(4)
IntroductionRational designs and syntheses of inorganic-organ-ic hybrid materials constructed from flexible ligandshave received considerable attention because of theirnovel structures as well as their special functional prop-erties[1,2]. Multicarboxylate… 相似文献
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People have long been interested in the coordination polymers of terbium! with carboxylic acids for those polymers often have peculiar structure and luminescent feature. They can be used as extraction and separation agents, bactericides, luminescent and functional materials. For example, they are used in the production of plastic membranes, lighting materials, developing materials and ornament materials[1～3]. In chemical literature, we can find many research reports about ternary complexes of… 相似文献
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1 INTRODUCTION The chemistry of polyoxometalates has been at- tracting much attention due to the richness in their structures, electron and proton storage abilities, ther- mal stability and applications in catalysis, medicine and surface sciences[1～3]. In recent years, the mixed- valence as well as full oxidized vanadium polyoxo- anions have been crystallized with a variety of orga- nic molecules as counteranions[4～8]. However, the guiding principles of the crystal structures of poly- o… 相似文献
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1 INTRODUCTION There is considerable interest in the heteropolymetalates in view of their potential applications in many fields, such as, catalysis, biology, medicine, magnetochemistry, and materials science[1～5]. It has been well- known that the rare earth elements are highly oxophilic and the anion of polyoxomolybdates have oxygen-rich composition, which can be used as synthons for the construction of novel heteropolymetalates. Since the structure of polyoxoanion 36-molybdate Mo36O1128… 相似文献
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1 INTRODUCTION The assembly of coordination networks is a field of increasing interest[1~4]. Research along this line is induced by the idea that coordination networks have potential technological applications such as optoele- ctronic devices and microporous materials for shape and size separation and catalysis[5~7]. In this paper, there has been current interest in using polycarboxy- late as anion linking groups to support stable poly- meric coordination open frameworks with transition m… 相似文献
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1 INTRODUCTION Orotic acid (H3dtpc), an important pyrimidine derivative as the effective precursor in the biosynthesis of pyrimidine base of nucleic acids in living organisms, plays a unique role in bioinorganic and pharmaceutical. Aside from the biological interest, orotic acid is also interesting in coordination chemistry. Its ketonic and enolic tautomers along with asymmetric geometry make it to be a very good versatile polydentate ligand[1~5]. The incorporation of metals into supram… 相似文献
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1 INTRODUCTION Nickel is vital for organism as a trace element and it often acts as component or secondary factor of enzyme. In the latest two decades, biological inor- ganic chemistry of nickel has become one of the hottest fields and the coordination chemistry of nic- kel has made a great progress[1]. Complexes built upon organic aromatic carboxylic acid and metallic ion have attracted chemists’ interest for years due to their potential applications in material, medicine, molecular ele… 相似文献
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GUO Wen-Juna ZHANG Han-Huia b HUANG Chang-Canga SUN Rui-Qinga CHEN Yi-Pinga CAO Yan-Ninga a 《结构化学》2005,(7)
1 INTRODUCTION It is well-known that bismuth and lead display attractive properties as promoting elements in noble metal-based catalysts[1], and thermal decomposition of ammonium metal oxalates can yield crystalline porous materials with a high surface area. This feature makes them attractive as precursors for catalysts and other nanocrystalline oxides[2]. Because of their topology, the oxalates themselves also possess inte- resting properties such as the capability of ion-exchange. The … 相似文献
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LIN Zheng-Zhong ZHANG Han-Hui② HUANG Chang-Cang SUN Rui-Qing ZHAO Shi-Long LIN Zhi-Hua Wu Xiao-Yuan 《结构化学》2001,(6)
1 INTRODUCTION The design synthesis of metal oxide heterpoly compounds have been the subject due to their diverse structures and potential applications in catalysis, sorption, electrical conductivity, ion exchange and anti-virus[1]. Molybdenum phosphates with microporous framework serve as a new kind of inorganic microporous materials. In the course of our investigation on the synthesis of Molybdenum phosphates, we have hydrothermally synthesized an organically templated solid material[… 相似文献
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ZHANG Xin~ YOU Wan-sheng~ ** ZHU Zai-ming~ DANG Li-qin~ SUN Zhen-gang~ ZHENG Xue-fang~ . Institute of Chemistry for Functionalized Materials Faculty of Chemistry Chemical Engineering Liaoning Normal University Dalian P. R. China . Liaoning Key Laboratory of Bio-organic Chemistry Dalian University Dalian P. R. China 《高等学校化学研究》2007,(1)
IntroductionPolyoxometalates are used as the versatile inorga-nic building blocks for the construction of molecular-based materials[1—7]. Nanosized polyoxometalates aresuitable building blocks for the construction of crystal-line microporous structural m… 相似文献
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1 INTRODUCTION The rational design and synthesis of new metal- organic frameworks have generated considerable interest in supramolecular chemistry and materials science owing to their intriguing structural diver- sities and potential applications as functional mate- rials[1～6]. Carboxylate-containing ligands have attrac- ted considerable attention because of the various coordination modes of carboxylate group, the ability to form hydrogen bonds and the potential applica- tions as functio… 相似文献
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1 INTRODUCTION In the last decade, cyano-bridged Prussian Blueanalogues[1] have been intensively studied from theviewpoint of application as functionalized molecule-based magnets[2], chemical sensor materials[3], fluo-rescent materials[4] and zeolitic-type materials[5, , 6]etc. In 1976, a series of cyano-bridged three-dimen-sional rare earth hexacyanometalates(IIILnM(CN)6?nH2O (M = Fe or Cr, n = 4 or 5) were crystallized andsubjected to single-crystal X-ray analysis[7]. … 相似文献
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HUANG Xi-He XIANG Sheng-Chang FU Rui-Biao SHENG Tian-Lu ZHANG Jian-Jun LI Ya-Min WANG Long-Sheng WU Xin-Tao ② 《结构化学》2006,(7)
1 INTRODUCTION Polyoxomolybdates have been of great interest due to their unique structural varieties, associated multitude of properties and applications as catalysis, medicine and material[1, 2]. One of the most impor- tant aspects is the synthesis and investigation of the materials on polyoxomolybdates containing organo- metallic groups[3～5]. Such materials can provide molecular models for heterogeneous catalysis and display cooperative effects or bifunctional catalytic activity[6]. O… 相似文献
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Synthesis and Structural Characterization of a Novel Coordination Polymer [Cd(C_4H_2O_4)(C_3H_4N_2)_3]_n·2nH_2O 总被引：1，自引：2，他引：1
1 INTRODUCTION In recent years, the design and synthesis of metalorganic coordination polymers have attracted considerable attention, for such supramolecular assemblies have interesting structures as well as potentiaapplications as smart optoelectronic, magnetic andporous materials. By judicious selection of ligandand metal coordination geometries, control over thetopology and geometry of the infinite networks canbe gained. As neutral donor ligands, 4,4?-bpy, pyrazine and imidazole which … 相似文献