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<正> The crystal structure of the title silver complex has been determined by the single crystal X-ray diffraction method.The white plate crystal is tri-clinic.space group P1 with a=12.289(1),b=13.330(2),c=14.846(1)A.α=59.78(1),β=70.33(1),γ=64.01(1)°,V=1867.9A3,Z=2,Dc=1.404 g/ cm3,Mr=789.6,F(000)=808,MoKa radiation,μ(MoKa)=7.891 cm-1,final R=0.049 and Rw=0.051 for 5753 observed reflections.The silver(I)is surrounded by two P and two S atoms in a distorted tetrahedral coordination. 相似文献
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SynthesisandCrystalStructuralCharacterizationof(NH_4)_5H_3Mn_3V_(12)O_(40)·15H_2OWANGZuo-Ping;LIUJing-fuandWANGEn-bo(Depatmen... 相似文献
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Synthesis and Crystal Structure of FeCo2(CO8)(u3—S)[P(OCH2Ph)3] 总被引:1,自引:0,他引:1
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以二烷基二硫代磷酸亚铜和二茂铁基双膦配体为原料,二氯甲烷为溶剂合成了一个新颖的晶体化合物{CuS2P(OCH2Ph)2[Fe(η5-C5H4PPh2)2]}1。其结构通过IR,元素分析和X-射线单晶衍射法确定。化合物1中的铜原子与螯合配体dppf中的两个磷原子配位[Cu-P键长分别是2.2492(5)和2.2364(4)],并与dtp中的两个硫原子配位[Cu-S键长分别是2.4055(5)和2.4582(5)],中心铜原子形成扭曲的四面体构型。 相似文献
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Synthesisand ̄(183)WNMRCharacterizationofβ-[(CeO)_3(SiW_9O_(34))_2] ̄(14-)HeteropolyanionMENGLuandLIUJing-fu(DepartnientofChemi... 相似文献
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本文从结构化学角度,阐述了标题化合物的EI质谱断裂行为,这些化合物的分子离子基本上按分步断裂分别失去羰基,直至获得[CH3CCo3[PPh2CH2PPh2)]^ 和[CH3CCO3]^ ,然后,这些残基和含膦配体继续断裂,失去Ph,PhP,Ph3P,C7H7,C6H6,C2H2,H2和Co等,生成各种相应的三核,二核和单核钴的碎片离子。 相似文献
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XIE Yi-Ming WU Ji-Huai 《结构化学》2007,26(12):1471-1475
A novel complex Cu(PPh3)2(acac) 1 (PPh3 = triphenylphosphine, acac = acetylacetone) was obtained by a solution reaction and structurally characterized by X-ray diffraction. The crystal belongs to monoclinic, space group P21/n with a = 13.7361(8), b = 12.8204(7), c = 19.7638(13) , β = 95.946(2)°, C41H37CuO2P2, Mr = 687.19, V = 3461.7(4) 3, Z = 4, Dc = 1.319 g/cm3, S = 1.067, μ(MoKα) = 0.758 mm–1, F(000) = 1432, R = 0.0403 and wR = 0.0990. Complex 1 is characterized by an isolated structure. X-ray structure analysis of 1 shows that acac behaves as a chelating ligand and PPh3 coordinates as a monodentate ligand to the Cu(I) atoms. Photoluminescent investigation reveals that the title complex displays a strong green-light emission. 相似文献
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The title compound [Co3(CO)9(μ3-C)C(O)OCH2]2 was synthesized by the reaction of [Cl3CC(O)OCH2]2 with Co2(CO)8 at 40~50 ℃. Crystal data: C24H4O22Co6, Mr=997.88, monoclinic, space group P21/n(#14), a=9.330(2), b=15.197(4), c=11.783(4), β=91.16(2)°, V=1670.4(7) 3, Z=2, Dc=1.984 g/cm3, μ(MoKα)=30.01 cm-1, F(000)=972.00, T=293K, final R=0.045, Rw=0.051 for 1936 observed reflections with I>2σ(I). The structure contains two centrosymmetric dimeric molecules in a unit cell, each of which has two tetrahedral skeletons (CCo3) connected through a C(O)OCH3CH2OC(O) bridge. 相似文献
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基本标题簇合物的快原子质谱研究,提出该二簇合物在质谱过程中的可能断裂途径及其簇骼转换的相关性。 相似文献
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The title clusters [(PPh3)(p-BrC6H4CO2)2RuB10H8] (1) and [(PPh3)2Ru(PPh3)(p-BrC6H4CO2)RuB10H9] (2) have been prepared and characterized by elemental analysis, FT-IR, ^1H, ^13C NMR spectra and single-crystal X-ray diffraction analysis. The clusters crystallize in monoclinic system, space group C2/c, with a =2.569(4) nm, b= 1.546(2) nm, c= 1.927(3) nm ,8=95.11(2)°, Z=8, V=7.622(21) nm^3, Dc=1.533 Mg/m^3, F(000)=3472, S= 1.009, R= 0.0418, wR=0.0775 and triclinic system, space group P-l, with a=1.3142(3) nm, b= 1.3761(3) nm, c=1.8503(4) nm, a =90.445(4)°,β=105.950(4)°, γ108.980(4)°, Z=2, V=3.0251(12) nm^3, Dc = 1.434 Mg/m^3, F(000)= 1316, S=1.007, R=0.0464, wR=0.1175, respectively for 1 and 2. In the structures, both of the dusters are based on a closo-type C2v 1: 2 : 4 : 2 : 2 RUB10 stack with the metal occupying the unique six-connected apical position. In cluster 1, the metal center has three exo-polyhedral ligands: one triphenylphosphine and two dative oxygen atoms of p-bromobenzoates. The other oxygen atoms of two p-bromobenzoate are additionally bonded to B(2) and B(3) atoms respectively, resulting in two exo-cyclic five-membered Ru-O-C-O-B rings and engendering a symmetrical conformation. The cluster 2 is a bimetallic species in which the second ruthenium is bound to the {RUB10} center via one Ru-Ru bond and two {RuHμB} bridges resulting in one closo distorted exo-polyhedral Ru(1)-Ru(2)-B(3)-B(6) tetrahedron. 相似文献
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用气相流动吸附法(grafting)制备复合载体,用浸渍法(impregnation)制备MoO3/(TiO2-SiO2)催化剂.应用LRS和TPR技术研究MoO3在复合载体TiO2-SiO2表面的分散状态,发现TiO2在SiO2表面的分散可增强MoO3与载体之间的相互作用,提高MoO3在载体表面的分散阈值.催化剂的活性评价在固定床中压反应装置中进行,以69%(wt)环己烷、20%(wt)的环己烯、10%(wt)的苯、1%(wt)的噻吩混合液为反应液,以噻吩、环己烯和苯的转化率作为催化剂的HDS、HYD、BHD活性指标.结果表明,经TiO2调变后,其HDS、HYD、BHD活性都较原来高,对于不同MoO3含量的MoO3/(TiO2-SiO2),HDS、HYD催化性能测试发现,当MoO3含量低于分散阈值时,其HDS、HYD活性随MoO3含量线性上升,但在高于分散阈值后,几乎保持不变.该催化剂对苯几乎没有加氢活性,显示出很高的环己烯加氢选择性.通过分散阈值与其HDS、HYD活性的关系可知,分散阈值可作为优化加氢精制催化剂配比的一个重要参数,具有较强的实际意义 相似文献
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INDOStudiesonElectronicStructuresof(C_8H_8)Ln(2,4-C_4H_11)(THF)(Ln=Nd,Sm,Er)WANGZhi-zhong*,FENGJian-nan,ZHANGSo-boandLIUJu-zh... 相似文献
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〔Mo_3(μ_3-O)(μ-S)_3(μ-OAc)(dtp)_3(py)〕和〔Mo_3(μ_3-S)(μ-S)_3(μ-OAc)(dtp)_3~-(py)〕(dtp=S_2P(OC_2H_5)_2~-)簇合物分别与金属化合物BiI_3和SbBr_3进行原子簇反应均能获得意外产物{〔Mo_3(μ_3-S)(μ-S_2)_2(dtp)_3〕(μ_3-S)(η~3-S_2)〔Mo_3(μ_3-S)(μ-S)_3(μ-OAc)(dtp)_2〕}六核钼簇。其结构实际上是由两个三核钼簇通过一个(μ_3-S)和一个“把手型”配位方式的(η~3-S_2)基团连结而成。在晶胞中,通过相邻{Mo_6}簇的S-S超分子相互作用组成了沿着a轴的{Mo_6}簇链。标题簇合物的结晶学参数如下:三斜晶系,空间群,a=13.726(4),b=14.899(4),c=17.610(5),α=107.43(2)°,β=81.63(3)°,γ=103.36(2)°,V=3332(4),Z=2.对5771个I>3σ(I)的衍射点,最终结构偏离因子R=0.056,R_ω=0.061。 相似文献
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基于标题簇合物的快原子质谱研究,提出该二簇合物在质谱过程中的可能断裂途径及其簇骼转换的相关性。 相似文献
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