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本文报道标题Schiff碱铜(Ⅱ)配合物的制备和晶体结构的测定。该晶体属正交晶系,空间群为P2_12_12_1,晶胞参数为a=0.8844(2),b=1.6286(4),c=1.7751(5)nm,V=2.5568(2)nm~3,Z=4,D_x=1.33g·cm~(-3),F(000)=1068e,μ=9.2cm~(-1)(MoKa)。用Patterson法和Fourier合成法解出结构,经最小二乘法修正,最终偏离因子R值为5.8%。结构分析结果表明,分子中Cu(Ⅱ)呈畸变的四面体配位。两个配位体平面CuN(1)O(1)和CuN(2)O(2)之间夹角为39.3°。两个水杨醛亚氨基N上的α-甲苄基彼此相互垂直并在CuN(1)O(1)N(2)O(2)的近似平面的同一侧,它们又与各自的水杨醛亚氨基平面几乎垂直。 相似文献
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Observation of Diffusion Process of a Water Droplet Immersed in Protein Solution in Microgravity 下载免费PDF全文
Pure liquid-liquid diffusion driven by concentration gradients is hard to study in a normal gravity environment since convection and sedimentation also contribute to the mass transfer process. We employ a Math Zehnder interferometer to monitor the mass transfer process of a water droplet in EAFP protein solution under micro- gravity condition provided by the Satellite Shi Jian No 8, A series of the evolution charts of mass distribution during the diffusion process of the liquid droplet are presented and the relevant diffusion coefficient is determined. 相似文献
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稀土元素氯化物水合物的脱水过程与水解反应的机理 总被引:12,自引:0,他引:12
熔盐电解法制取稀土金属时,所用的无水稀土氯化物是由相应的水合物在减压下加热脱水而制得的。弄清楚脱水过程的机理,避免氯化物水解生成氯氧化物,以期制得纯净的无水氯化稀土,这对于提高电解时的电流效率,降低金属产品中的含氧量,是很重要的。为此我们研究了全部稀土元素氯化物水合物的脱水过程和气相水解反应的机理,确定了一些中间水合 相似文献
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报道标题Schiff碱铜(II)配合物的制备和晶体结构的测定.该晶体属正交晶系,空间群为p2~12~12~1,晶胞参数为α=0.8844(2),b=1.6286(4),c=1.7751(5)nm,V=2.5568(2)nm[3],Z=4,Dx=1.33g.cm[-3],F(000)=1068e,μ=9.2cm[-1](MoKα).用Patterson法和Fourier合成法解出结构,经最小二乘法修正,最终偏离因子R值为5.8%.结构分析结果表明,分子中Cu(II)呈畸变的四面体配位.两个配位平面CuN(1)O(1)禁CuN(2)O(2)之间夹角为39.3度.两个水杨醛亚氨基N上的α-甲苄基彼此相互垂直并在CuN(1)O(1)N(2)O(2)的近似平面的同一侧.它们又与各自的水杨醛亚氨基平面几乎垂直. 相似文献
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StructureComparisonofBenzothiazepineDerivativesLiGen-PeiJiang;Li-HongLiPing-Wei(InstituteofPhysicalChemistry,PekingUniversity... 相似文献
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The basic phospholipase A2 from the venom of Agkistrodon halys pallas possesses the ability to cause hemolysis in contrast to the other two phospholipase A2 from the same venom. A new form of crystals of this enzyme was grown. The crystals belong to space group of P212121 with unit cell parameters of a=9.175nm, b=10.080nm , c=2.287nm.The crystals diffract to high resolution, and are suitable for detailed structural studies. The data were collected up to 0.25nm resolution using synchrotron radiation-imaging plate-Weissenberg camera system. Preliminary analysis reveals the presence of two molecules in the asymmetric uint and the molecule may pack with the smallest dimension approximately parallel to the c axis. The new crystal form is more attractive than the monoclinic one previously reported for crystallographic structure determination as it contains fewer molecules in the asymmetric unit. 相似文献
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