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1.
Synthesis and Structure of [Cu(OH)2(H2O)2(4—C5H4N—COOH)2]   总被引:1,自引:0,他引:1  
钟兆思  孙道峰 《结构化学》2001,20(6):478-480
1 INTRODUCTION Supramolecular chemistry and crystal engineering of coordination compounds have attracted considerable interests nowadays owing to the fascinating structural diversity and potential applications as functional materials[1,2]. Generally, architectures of supramolecules are formed through hydrogen bonds, ?- ?stacking interaction or other weak interactions between the molecules. Recently, many supramolecular compounds containing silver(I) and copper(II) species have been re-…  相似文献   

2.
1 INTRODUCTION Cadmium (Ⅱ) complexes have been exten- sively studied from both chemical and structural views, mainly due to the capability of cadmium (Ⅱ) (shared by most d10 metal ions) to adopt different modes of coordination determined by the consideration of size, as well as electrostatic and covalent bonding forces[1]. And the field of coordination polymers has witnessed tremendous growth over the last decade[2]. Many coordination polymeric networks have been shown to posses intere…  相似文献   

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5.
1 INTRODUCTION Trinuclear molybdenum complexes with Mo3(3-S)(-O)n(-S)3n (n = 0~3) cores have been extensively studied on their diversified reactions towards various organic ligands and many metals. Many derivatives with Mo3S4 core have been rationally synthesized from the cation precursor [Mo3S4(H2O)9]4+ and its neutral derivative Mo3(3-S)(-S)3(DTP)4(H2O)[1]. However, due to their structural lability, complexes with Mo3(3-S)(-O)n(-S)3n (n = 1~3) cores have been reported limitedl…  相似文献   

6.
1 INTRODUCTION During the search of molecule-based materials with interesting properties such as catalysis, cla- thration etc., much attention has been focused on the synthesis of one-, two- and three-dimensional extended solids involving cadmium[1], as its d10 configuration permits a wide variety of geometries and coordination numbers. Rigid bridged ligands such as carboxylate groups are frequently used to construct these materials. Therefore, the coordi- nation chemistry of Cd(Ⅱ) ca…  相似文献   

7.
1 INTRODUCTION The Schiff base ligands have been used to provide a stereochemically rigid ligand framework in homogenous precatalysts of some metals, such as salen Cr catalysts in asymmetric ring-opening re- action of epoxide[1] and salen Al in ring-opening polymerization of lactide and related cyclic esters[2]. Recently, it was reported that the bidentate Schiff base complexes of early and late transition metals can be served as promising alternatives to metal- locene catalysts for th…  相似文献   

8.
1INTRODUCTION The chemistry of molybdenum-sulfur compounds has attracted the attention from chemists,bioinor-ganic chemists and biochemists because Mo and S are important elements of metal enzymes especially N2-ase[1~6].Since the di-molybdenum(0)thiolate com-pound with a[Mo2S2]2?unit core and two-electron transfer character,[Et4N]2[Mo2(SR)2(CO)8](R=Ph,tBu),was synthesized by introducing thiolate ligands into Mo(CO)6[7],the chemistry of complexes conta-ining low valence molybdenum at…  相似文献   

9.
潘国华  庄伯涛 《结构化学》2001,20(5):384-386
1 INTRODUCTION In 1984, thiolate ligand was successfully introduced into molybdenum carbonyl compound by the reaction of Mo(CO)6 with [Et4N]SR( R = C6H5, But) in a moderate condition[1]. From then on, a series of dinuclear molybdenum(0) carbonyl thiolate compounds have been synthesized and characterized by using a variety of thiolate ligands in our research group. It was found that a planar Mo2S2 unit is in the compound [Et4N]2[Mo2(CO)8(SC6H4-CH_3-p)2][2] (2) and a "butterfly" t…  相似文献   

10.
1INTRODUCTIONMetal-oxoclusterchemistryhasbeenactivelypurchasedduetotheinterestinchemistryitselfanditsvariousapplicationsinfieldssuchascatalysis,electronicconductivity,magnetism,nonlinearopti-calpropertiesandmedicine[1~3].Recently,anim-portantadvanceinmet…  相似文献   

11.
利用(PhCH_2)_3Sn]_2O与ArCH=CHCO_2H反应,合成6个新的[PhCH_2Sn(O) (O_2CCH=CHAr)]_6簇合物。通过元素分析、红外光谱和X射线单晶衍射对其结构进 行了表征。用X射线单晶衍射测定了[PhCH_2Sn(O)(O_2CCH=CHPh)]_6的晶体结构, 结果表明,该簇合物为三斜晶系,空间群P1, a = 1.6771(3) nm, b = 1.8020(4) nm, c = 2.1073(4) nm, α = 108.111(3)°β = 103.614(3)°,γ = 104.679 (3)°,Z = 2, V = 5.5033(18) nm~3, D_c = 1.350 g/cm~3, μ = 1.396 mm~(-1) , F(000) = 2208, R = 0.0606, wR = 0.698。该化合物为鼓型簇状结构,锡原子 呈畸变的八面体构型。  相似文献   

12.
利用Ph3SnOH和3-吲哚丁酸以1:1摩尔比反应,合成了新型含羧酸配体的鼓形 有机锡氧簇合物:六聚苯基锡氧3-吲哚西酸酯。通过元素分析、红外光谱和X射线 单晶衍射对其结构进行了表征。测试结果表明:该化合物为三斜晶系,空间群P1, a=1.1722(6),b=1.5694(8)nm,c=1.7227(9)nm,α=116.251(8)°,β=100. 854(10)°,γ=95.606(9)°,Z=1,V=2.732(3)nm^3,Dc=1.554g·cm^-3,μ =1.420mm^-1,F(000)=1276,R=0.0630,ωR=0.0762。晶体结构中,六配位的锡原 子呈畸变的八面体构型。  相似文献   

13.
The title complex [nBuSn(O)(NNA)]6(1), was synthesized by the reaction of nBuSn(O)OH with naphthalene acetic acid in 1∶1 molar radio, where HNNA=naphthalene acetic acid. The complex was characterized by IR, 1H NMR spectra and elemental analysis. The crystal structure was determined by X-ray diffraction method. It crystallizes in monoclinic system with space group P21/n. The crystal data are: a=2.647 1(5) nm, b=1.412 9(3) nm, c=2.805 7(6) nm, β=116.185(3)°, Z=4, V=9.417(3) nm3, Dc=1.595 g·cm-3, μ=1.632 mm-1, F(000)=4 512, R1=0.050 3, wR2=0.131 2. The structure shows a distorted octahedral configuration with six-coordination for the central tin atom. The bioactivity test shows that the Sn(Ⅳ) complex has selective antibacterial property. CCDC: 752497.  相似文献   

14.
SynthesisandStructureofPropionate-bridgedMixed-metalClusterCompound:〔MoW_2O_2(O_2CC_2H_5)_6(H_2O)_3〕ZnBr_4·4H_2O¥LiuHuang;XuLi;Hua...  相似文献   

15.
1 INTRODUCTION The chemistry of polyoxometalates continues to attract interest as a result of their realized and potential applications in diverse fields, such as cata- lysis, analysis, biochemistry, medicine and material science[1~3]. In the past few …  相似文献   

16.
尹汉东  王传华  马春林  王勇 《中国化学》2002,20(12):1608-1611
IntroductionOrganotin(IV)derivativesofcarboxylicacidwereextensivelystudiedduetotheirbiologicalactivities .1 5Inrecentyearsmoreandmorereportsonthesynthesis ,anti tumouractivities ,biocidalactivities ,antibioticactivitiesandstructuralelucidationofvariousorgan…  相似文献   

17.
1 INTRODUCTION There is great interest in the study of organotin carboxylic ester compounds due to their consider- able biological activities and structural diversities[1~3]. Since Holmes, R. R.[4] first reported the hexameric drum organotin compound, many organotin carboxy- lic ester compounds with drum-shape have been syn- thesized in recent years[5, 6]. It has been revealed that organotin compounds containing carboxylate ligands with additional donor atoms that are available for coord…  相似文献   

18.
1 INTRODUCTION Polyoxometalates, a rich and remarkable classof inorganic cluster system[1], exhibit diverse appli-cation possibilities due to their topological and elec-tronic properties, ranging from their well-known roleas reagents in analytical, b…  相似文献   

19.
路嫔  单永奎 《结构化学》1996,15(4):301-306
SynthesisandCrystalStructureofK_8H_5[La(SiW_2Mo_9O_(39))_2(H_2O)_(17)]4H_2OLuBin(DepartmentofChemistry,HarbinNormalUniversity,Har?..  相似文献   

20.
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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