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<正> Mr =1015.05, P21/c, a= 10.912(4), b= 12.088(3), c= 18.807(8) A.β=103.57(3)° ,V= 2411.4 A3, Z = 2, DC = 1.40 g/cm3.λ(MoKα)= 0.71073 A, μ=7.2 cm-1,F(000)=1048.Room temperature, final R=0.069, Rw=0.091. The geometry around the Mo atom is a distorted octahedron. The equatorial Mo-C distances are shorter than the axial ones. The Mo...Mo distance is 3.949A.  相似文献   

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吴鼎铭  黄小荥 《结构化学》1994,13(5):385-388
SynthesisandStructureof[HOCH_2CH_2N(CH_3)_3]_4[Cu_4OCl_(10)]WuDing-Ming;HuangXiao-Ying;ZhuangHong-Hui(StateKeyLaboratoryofStruct?..  相似文献   

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1 INTRODUCTION During the past decade, a series of organic-inor- ganic hybrid compounds based on metal halide units have been prepared and studied[1]. The combination of organic and inorganic components at the mole- cular level affords us the opportunity to design new hybrid materials and modulate the properties of components[2]. As a result, some interesting proper- ties, such as non-linear optical[3], interesting magne- tic[4], efficient luminescence[2], ideal thermal and mechanical sta…  相似文献   

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1 INTRODUCTION The chalcogenidometallates with open frame- works have attracted considerable interest as pos- sible zeolite-like materials, of which highly interes- ting properties could be expected. Over the last de- cades a large number of thioanti…  相似文献   

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李来明  马爱增 《结构化学》1991,10(2):155-158
<正> The title complex has been synthesized and characterized by elementary analysis,FT-IR and Raman spectra. The crystal and molecular structure was determined by X-ray diffraction analysis. The crystal of this complex C6H18O12P3Eu(Mr = 527. 08) is monoclinic with space group P21/c and cell parameters a= 10. 418(2) ,b= 16. 596(6) ,c =10. 766(2) A ,β=111. 67(2)°,V=1729. 8(8) A3 and Z=4. Dimethyl phosphate an-ions coordinate with europium ions through double O-P-O bridges to form a special network of rings-linking-rings. The local coordination geometry of Eu is a slightly distorted octahedron.  相似文献   

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Introduction Over the past decades, polyoxometalates(POMs)have been attracting extensive interestowing to the widerange of their topological properties and potential appli-cations in catalysis, photochemistry, electrochromism,and magnetism[1,2]. Meanwhile, owing to the potentialapplication of polyoxometalaes as anticancer and antivi-ral drugs, their complexes have attracted increasing in-terest of both inorganic chemists and biochemists[3]. Itis well known that polyoxometalates are excellent …  相似文献   

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合成了开环夹心羰基化合物[2,4-(CH_3)_2C_5H_5]_2GCO,得到了该分子的单晶结构,[2,4-(CH_3)_2C_5H_5]_2TiCO晶体属于正交晶系,P2_12_12_1空间群,晶胞参数a=1.0078(5)nm,b=1.1909(8)nm,c=1.1946(5)nm,b=1.4337(13)nm~3,Z=4,R=0.054。单晶结构表明该分子为平行覆盖型开环夹心化合物,用EHMO方法计算了[2,4-(CH_3)_2C_5H_6]_2TICO的电子结构。  相似文献   

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The title compounds have been respectively synthesized by solution process and solvothermal reaction, and their crystal structures were determined by X-ray diffraction method. For (CH3CH2CH2CH2NH3)6(BiI6)(I)2I3 1, it crystallizes in tficlinic, space group P1^- with Mr = 2049.76, a = 8.5719(1), b = 11.7461(3), c = 15.700(1)A, V = 1451.4(1)A^3, Z = 1, Dc = 2.345 g/cm^3, F(000) = 924, μ(MoKα) = 8.907 mm^-1, T = 293(2) K, the final R = 0.0655 and wR = 0.0804 for 2399 observed reflections with I 〉 2σ(I). For (NH3CH2CH2NH3)2Bi2I10 2, it crystallizes in monoclinic, space group P21/n with Mr= 1811.20, a = 8.434(4), b = 13.862(6), c = 13.362(6)A, V = 1499.9(12)A^3, Z = 2, Dc = 4.010 g/cm^3, F(000) = 1536,μ(MoKα) = 22.007 mm^-1, T = 293(2) K, the final R = 0.0584 and wR = 0.1451 for 1798 observed reflections with I 〉 2σ(I). The structures of 1 and 2 contain halobismuthate monomer and dimers, respectively. It is noteworthy that the dimers and their organic counters in 2 connect each other by N…I hydrogen bonds to form a layered structure, and the electrostatic interactions and crystal packing forces between layers give rise to the packing of the crystal. The optical absorption spectra of 1 and 2 reveal the appearance of sharp optical gaps of 2.13 and 2.01 eV, respectively.  相似文献   

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Introduction In recent years,there has been considerable interest in complexes formed by lanthanide cations and various benzoate derivatives[1-4],due to their potential application in areas,such as extraction,separation, germicide preparation,catalysis,luminescence,and functional material preparation[5].As a continuation of the study on lanthanide carboxylate[6-13],samarium  相似文献   

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胡宁海  徐吉庆 《结构化学》1991,10(2):117-120
<正> Fe_4S_4[SC(CH_3)_3]_4[(C1H_9)_2,Mr=1193. 23,tetragonal,142d,a = 23. 272(2), c= 13. 080(5) A ,V=7084(3) A3,Z=4,DC=1. 12g·cm-3,UUUU(MoKa) = 10. 8cm-1,F(000) = 2568,R=0. 058 for 1005 observed reflections. The cluster anion contains a cubane-type Fe4S4 core compressed along the 4 axis which is crystallographically imposed. Compared to other salts with different cations ,the core is subject to slight structural distortions in different crystalline environments and crystallographic symmetry of the anion is related to that of the cation.  相似文献   

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RE[CH2(CH2)4CONC4H9]3(NO3)3(RE=La,Dy)的合成和晶体结构   总被引:1,自引:0,他引:1  
采用X-射线四园衍射仪测定了Dy「Ch2(CH2)4CONC4H9」3(NO3)3和La「CH2(CH2)4CONC4H3」3(NO3)3的晶体结构。两个配合物具有相似的结构,均属单斜晶系,空间群为P21/c。晶体参数:Dy「La」:a=1.8564(3)「1.8564(2)」nm,b=0.9769(2)「0.9834(1)」nm,c=2.1863(6)「2.20038(7)」nm,β=96.08  相似文献   

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金钟声  关景文 《结构化学》1990,9(2):140-144
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测定了三核苯甲苯酸合物[Fe3O(OBz)6(CH3OH)3](NO3)(CH3OH)2(OBz^-=苯甲酸根)的电子光谱,应用配体场理论和T-S图求得配体场参数10Dq-12457cm^-1,用CNDO/2方法对其简化模型进行了计算。  相似文献   

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