恒温恒压下过氧化氢分解的动力学测定

过氧化氢催化分解的动力学测定是一个经典的物理化学实验,其动力学数据前人早有报道。在国内外物理化学实验教材中大都编入了这个实验反应可表示为:     

配合物[Tb(BsGlyH)2(phen)2(H2O)2]ClO4·H2O 的合成及晶体结构

N 酰化氨基酸含有肽键,结构与肽链羧基末端结构相似[1,2],并能直接参与生物过程,显示重要的生物作用。N 磺酰化氨基酸是N 酰化氨基酸中的一类,具有良好的生物活性。二十世纪七十年代到九十年代初,是国外一批学者研究过渡金属与N 磺酰化氨基酸配合物的热点时期[3 9],但到目前为止,稀土与N 磺酰化氨基酸配合物的研究报道尚未多见。随着稀土微肥、稀土饲料添加剂的使用,稀土已通过各种途径进入环境,所以研究稀土与N 酰化氨基酸、肽生物配体的配位作用对认识稀土离子在体内的存在形式和作用机理以及与蛋白质的构效关系有重要意义。本文合…     

镧与β-丙氨酸配合物{[La_2(β-ala)_6(H_2O)_4](ClO_4)_6·H_2O}_n的合成及晶体结构

稀土在羊毛染色剂中用做助染剂犤１犦，在钙蛋白中用做钙离子的探针犤２犦得到广泛的应用，稀土的生物效应是以其与各种生物配体如氨基酸、肽、蛋白质、核酸等生物分子的作用为基础的，因此研究稀土氨基酸配合物的单晶结构对于探讨稀土离子与生物体的作用很有意义，稀土与有关α－丙氨酸的摩尔比为１∶１犤３～４犦和１∶２犤５～７犦类型的配合物的单晶结构已有报道，而有关稀土β－丙氨酸配合物的研究还很少犤８犦，特别是关于稀土β－丙氨酸配合物的单晶结构还未见报道，本文合成了高氯酸镧与β－丙氨酸的１∶３型的配合物，并测定了其晶…     

双核配合物[Cu2(L-Asp)(phen)3(NO3)](NO3)·4H2O的合成及晶体结构

The new complex [Cu₂(L-Asp)(phen)₃(NO₃)](NO₃)·4H₂O (L-Asp=L-aspartic acid and phen=1,10-phenanthroline) has been synthesized and its crystal structure has been determined. The complex crystallizes in the monoclinic with space group P2₁/c, The cell parameters are: a=1.261 3(2) nm, b=1.500 8(4) nm, c=2.230 7(4) nm, β=99.55(1)°, and V=4.164 1(16) nm³，D_c=1.587 g·cm^-3. The complex contains two six-coordinated copper ions, and these two copper ions are connected together by L-aspartate to give rise to a binuclear structure. Hydrogen bonds and π-π stacking interactions are observed in the complex. CCDC: 249250.     

Synthesis and Crystal Structure of a New Ternary Complex of Nickel(Ⅱ) with L-Aspartic Acid and 1,10-Phenanthroline

A new ternary complex of nickel(Ⅱ) with L-aspartate (L-Asp) and 1, 10-phenanthroline(Phen), [Ni3(L-Asp)(Phen)5(H2O)3](ClO4)4.4.75H2O, has been synthesized in a mixed solvent of H2OC2H5OH at the pH value of 3. It crystallizes in triclinic, space group P-1 with a =11.861(2), b = 18.384(4), c = 19.746(3)(°A), α = 107.68(1), β = 105.94(1), γ= 103.41(2)°, V =3703.6(11) (°A)3, Mr = 1745.66, Z = 2, Dc =1.565 g/cm3, u = 0.989 mm-1, F(000) = 1791, R = 0.0643and wR = 0.1611. The complex contains two cations, binuclear [Ni2(L-Asp)(Phen)3(H2O)]2+ and mononu- clear [Ni(Phen)2(H2O)2]2+. All the nickel ions in the complex are six-coordinated with a distorted octahedral geometry, but the coordination environments for them are different. There exist hydrogen bonds and π-π stacking interactions in the complex.     

由香茅醛合成羟基香茅醛的研究

羟基香茅醛具有玲兰样香气,是一种传统的合成香料,主要用于调配各种花系列香精、食品香精、化妆品香精等。我们对它的合成方法进行了改进研究,用二乙醇胺与香茅醛缩合生成噁唑烷衍生物,将醛基保护,再用硫酸加助催化剂将其双键水合,进而将缩合物水解得握基香茅醛。     

镧与β-丙氨酸配合物{[La2(β-ala)6(H2O)4](ClO4)6·H2O}n的合成及晶体结构

The complex, {[La₂(β-ala)₆(H₂O)₄](ClO₄)₆·H₂O}_n, was synthesized in aqueous solution and its crystal structure was determined by X-ray diffraction method .The crystal is triclinic with space group of .The cell pa-rameters are a=0.946(1)nm, b=1.2917(1)nm, c=2.1726(3)nm,α=76.79(1)°, β=80.85(1)°,γ=83.35(1)°, V=2.5429(5)nm³, Z=2, D_c=1.958g·cm^-3.The complex is an one-dimensional infinite chain. The coordination number of lanthanum ion is nine, forming a distorted tricapped trigonal prism.