邻菲罗啉—氨基酮铜（Ⅱ）配合物的合成及表征

合成了三种邻菲罗啉－氨基酸酮（Ⅱ）的配合物,用元素分析,摩尔电导,ＩＲ和电子吸收光谱等手段对配合物进行表征。     

配合物的稳定性与配体酸碱强度之间的直线自由能关系 Ⅺ.铜(Ⅱ)-5-取代邻菲罗啉-α-氨基酸三元体系

在25.0±0.1C和0.1mol·dm^-3KNO₃存在下,用pH法测定了邻菲罗啉、5-硝基邻菲罗啉、5-氯邻菲罗啉、5-甲基邻菲罗啉为第一配体;脯氨酸、α-氨基异丁酸、异亮氨酸、缬氨酸、甘氨酸、丝氨酸为第二配体与铜(Ⅱ)形成三元配合物的稳定常数,结果表明三元配合物的稳定性与第一配体和第二配体的酸碱强度之间均存在直线自由能关系,应用反馈π键存在的程度讨论了配合物稳定性的变化趋势。     

稀土—邻菲罗啉—氟尿嘧啶三元配合物的合成及表征

合成了七种稀土硝酸盐－邻菲罗啉－氟尿嘧啶的三元固体配合物。分子进行了元素分析，摩尔电导率的测定和红外光谱，热重，差热分析的研究，确证配合物的化学式「Ｌｎ（ｐｈｅｎ）２（Ｆｕ）（ＮＯ３）」（ＮＯ３）２（Ｌｎ＝Ｙ，Ｌａ，Ｃｅ，Ｎｄ，Ｓｍ，Ｇｄ，Ｎｏ）。此外，对Ｌａ的三元配合物进行了＾１２Ｃ核磁共振谱的测定，并通过体外癌细胞瘤株抑制率的试验，表明配合物有明显的抗肿瘤效果。     

邻菲罗啉直接光度法测定铜(Ⅱ)氨溶液中的铜(Ⅰ)

1引言废弃电路板含有大量的有价金属元素和对环境有害的重金属元素,对其回收利用具有很高的经济价值和环保意义。采用碱性Cu(氨溶液对电路板中的有价值金属进行湿法浸取是新的处理方法,体系中铜(含量对该过程有影响,有必要对Cu(进行快速准确的分析。铜的测定方法很多,但这些方法不具备价态分析的能力。本实验在氨性介质中,以邻菲罗啉为显色剂,采用三乙醇胺、亚硫酸钠(Na2SO3)联合保护Cu(,直接测定了Cu(氨性溶液中的Cu(。对废电路板浸取液测定的结果表明,本方法能够在大量Cu(存在下准确测定Cu(,操作简便。2实验部分2.1仪器和试剂TU1901…     

HPMαFP及邻菲罗啉稀土混配配合物的合成与性质

首次合成了混配配合物RE(PMαFP)_3·Phen[RE为La、Pr、Nd、Sm、Eu、Gd、Tb,Dy、Ho、Er、Tm、Yb、Lu、Y;HPMαFP为1-苯基-3-甲基-4-(α-呋喃甲酰基)吡唑酮-5,Phen为邻菲罗啉]。通过元素分析、红外光谱等初步研究了这些配合物的组成和性质。     

水相中金属铜表面生成亚铜—邻菲罗啉配合物的反应

本文研究了零价铜在邻菲罗啉水溶液中的反应。当溶液敞露于空气并存在有机阴离子Ｘ－时，例如苯甲酸盐（Ｂｚ）、对甲基苯磺酸盐（Ｔｓ）等，铜的表面生成了致密的反应产物的薄层，经ＩＲ、ＵＶ／ＶＩＳ、ＭＳ和元素分析证明了该薄层为相当纯的亚铜的邻菲罗啉配位化合物，结构为［Ｃｕ（ｐｈｅｎ）２］＋Ｘ－。在乙醇／甲苯混合溶剂中得到了表面反应产物的晶体［Ｃｕ（ｐｈｅｎ）２］（ＣＨ３Ｃ４Ｈ６ＳＯ３）Ｃ２Ｈ５ＯＨ，并用Ｘ－ｒａｙ测得了结构。本工作表明溶液中的ＣｕⅡ离子抑制Ｃｕ０氧化成ＣｕⅠ而影响反应层的形成，同时又促进ＣｕⅠ氧化成ＣｕⅡ的过程     

N—亚水杨基丙氨酸席夫碱,邻菲罗啉铜（Ⅱ）,锌（Ⅱ）,镍（Ⅱ）配合物的合成及性质

Ｎ－亚水杨基丙氨酸席夫碱、邻菲罗啉铜（Ⅱ）、锌（Ⅱ）、镍（Ⅱ）配合物的合成及性质沈良（杭州师范学院化学系３１００１２）Ｎ－亚水杨基氨基酸席夫碱可以作为研究维生素Ｂ６酶反应的模型化合物，并具有杀菌、抗癌等活性［１，２］，因此日益受到人们的重视。一些Ｎ－...     

硫酸镧与氨基酸配合物的合成及表征

合成了七种见文献报道的硫酸镧与氨基酸的配合物，通过化学分析，元素分析，红外光谱和热分析等，确定了所得配合物的组成为Ｌａ２（ＡＡ）ｎ（ＳＯ４）３．ｘＨ２Ｏ（ＡＡ＝氨基酸；ｎ＝４，４，６；ｘ＝４，６，８），并对它们的荧光光谱等进行了研究。     

氨基酸桥联新型手性锌双卟啉配合物的合成与表征

生命系统中的金属卟啉生物大分子在卟啉的Ｓｏｒｅｔ带均表现出诱导圆二色性（ＩｎｄｕｃｅｄＦｉｇ．１Ｓｔｒｕｃｔｕｒｅｏｆａｍｉｎｏａｃｉｄｂｒｉｄｇｅｄｚｉｎｃｐｏｒ┐ｐｈｙｒｉｎｄｉｍｅｒＯ,Ｏ┐Ｃ２┐ＡＡ┐Ｃ２┐（ＴＰＰ）２Ｚｎ２Ｒ＝Ｂｎ,ＡＡ＝Ｐ...     

氨基酸分析技术研究的进展

本文回顾了３０多年氨基酸分析技术的研究与进展。着重介绍了样品前处理、分析手段及分析精密度、准确度方面的新进展、新结论与新动向。     

Synthesis,Characterization, and Crystal Structure of a Chromium(III)‐Complex Containing 2,6‐Pyridinedicarboxylic Acid and 1,10‐Phenanthroline

The reaction of solution 2,6‐pyridinedicarboxylic acid and 1,10‐phenanthroline ( 1 ) with CrCl₃·6H₂O led to the complex [Cr(phen)(pydc)(H₂O)][Cr(pydc)₂]·4H₂O ( 2 ) (phen is 1,10‐phenanthroline and pydcH₂ is 2,6‐pyridinedicarboxylic acid). 2 was characterized by elemental analysis, IR spectroscopy and single‐crystal structure determination. Crystal data for 2 at ?80 °C: triclinic, space group , a = 818.5(1), b = 1492.2(1), c = 1533.6(2) pm, α = 76.45(1)°, β = 84.22(1)°, γ = 77.99(1)°, Z = 2, R₁ = 0.0416.     

稀土氨基酸固体络合物的合成及结构分析进展

本文综述了稀土氨基酸络合物的合成,以及应用红外、核磁、X-射线衍射、热分析等方法进行结构分析研究的进展情况。     

Note: Synthesis And Crystal Structure Of A Binuclear Fumarate Complexof Copper(II) With 1,10-Phenanthroline

As dicarboxylate complexes of transition metal possess potentially useful electronic and magnetic properties, [Mehrotra and Bohra (1983). Metal Carboxylates. Academic Press, London], much interest in their synthesis and structure has been apparent recently [Kaneko and Tsuchida (1981). J. Polymer Sci . , Macromolecular Reviews, 16, 397; Holton, Lappert, Pearce and Yarrow (1983). Chem. Reviews, 83, 135]. A series of metal complexes bridged by dicarboxylates has been synthesized in our laboratory and crystal structures show versatile coordination modes for the carboxyl group [Cheng, Liu, Xu and Xu (1999). J. Coord. Chem., 48 , 495; Nie, Liu, Luo and Xu (2001). J. Coord. Chem., 53, 365]. As a part of this investigation, we have synthesized a binuclear fumarate complex of Cu(II). X-ray analysis shows considerable coordination distortion resulting from close stacking interaction of aromatic phen rings.     

Mixed‐Ligand Complexes of Copper(II) with α‐Hydroxycarboxylic Acids and 1,10‐Phenanthroline

Eight new two‐ligand complexes of copper(II) with 1,10‐phenanthroline and one of four different α‐hydroxy‐carboxylic acids (glycolic, lactic, mandelic and benzylic) were prepared. The complexes of general formula [Cu(HL)₂(phen)] · nH₂O (HL = monodeprotonated acid) ( 1 – 4 ) were characterized by elemental analysis, IR, electronic and EPR spectroscopy, magnetic measurements and thermo‐gravimetric analysis. The complexes of general formulae [Cu(HL)(phen)₂](HL) · H₂L · nSolv [ 1 a (HL = HGLYO^–, n = 1, Solv = MeCN) and 3 a (HL = HMANO^–, n = 0)] and [Cu(L)(phen)(OH₂)] · nH₂O [ 2 a (L = LACO^2–, n = 4) and 4 a (L = BENO^2–, n = 2)] were characterized by X‐ray diffractometry. In all these latter a pentacoordinated copper atom has a basically square pyramidal coordination polyhedron, the distortion of which towards a trigonal bipyramidal configuration has been evaluated in terms of the parameter τ. In 1 a and 3 a there are three forms of α‐hydroxycarboxylic acid: a monodentate monoanion, a monoanionic counterion, and a neutral molecule lying in the outer coordination sphere; in 2 a and 4 a the α‐hydroxycarboxylic acid is a bidentate dianion coordinating through carboxyl and hydroxyl oxygens.     

稀土N-苯基邻氨基苯甲酸-1,10-邻菲咯啉二元、三元配合物的合成、表征及其光物理性质

合成了几种新型的稀土(钆,铕,铽)的N-苯基邻氨基苯甲酸-1,10-邻菲咯啉的二元、三元配合物.以元素分析、红外光谱和紫外光谱进行了表征,确定了组成.同时以低温磷光光谱确定了配体的三重态能级为24330cm^-1,研究了配体与稀土离子的能级匹配.详细讨论了配合物的光物理性质如发光性能和配体与稀土离子之间以及有机配体之间的分子内能量传递机制,结果发现,铽的N-苯基邻氨基苯甲酸-1,10-邻菲咯啉配合物的发光性能良好.     

Aerobic Alcohol Ammoxidation Catalyzed by Copper(I)/Amino Acid: a Scalable Protocol to Nitriles

A facile, practical and scalable catalyst system for alcohols ammoxidation into nitriles was developed using amino acid as ligand, oxygen as terminal oxidant and copper iodide(CuI) as catalyst. The catalyst system shows excellent functional groups compatibility for a wide range of testing substrates, even the substrates bearing oxidation- sensitive groups such as MeS-, alkenyl and -NH₂ can also work well. In addition, the protocol is readily scaled up to more than 20 g and the product can be obtained just through filtration or distillation without conventional column chromatography.     

Synthesis of Uridine Derivatives Containing Amino Acid Residues

Abstract

Convenient synthesis of uridine derivatives containing amino acid residues were carried out successfully by reacting triazolated uridine with the hydrochloride salts of some amino acid esters, which provides a general method for the direct introduction of amino acid group onto nucleoside residue.