Thermochemical Properties of Solid Complexes of Rare Earth Nitrates with Methionine

ＴｈｅｒｍｏｃｈｅｍｉｃａｌＰｒｏｐｅｒｔｉｅｓｏｆＳｏｌｉｄＣｏｍｐｌｅｘｅｓｏｆＲａｒｅＥａｒｔｈＮｉｔｒａｔｅｓｗｉｔｈＭｅｔｈｉｏｎｉｎｅＧａｏＳｈｅｎｇｌｉ（高胜利），ＹａｎｇＸｕｗｕ（杨旭武），ＲｅｎＤｅｈｏｕ（任德厚）ＳｈｉＱｉｚ...     

Studies on Standard Formation Enthalpies of Rare Earth Compounds by Using Structural Parameters

Ｔｈｅｒｅａｒｅａｆｅｗｐａｐｅｒｓｏｎｔｈｅｓｔｕｄｙｏｆｔｈｅｐｒｏｐｅｒｔｉｅｓｏｆｒａｒｅｅａｒｔｈｅｌｅｍｅｎｔｓａｎｄｔｈｅｉｒｃｏｍ ｐｏｕｎｄｓｗｉｔｈｔｏｐｏｌｏｇｉｃａｌｍｅｔｈｏｄ[1 ,2 ] .Ｉｎｔｈｉｓｐａｐｅｒ,ｗｅａｔｔｅｍｐｔｔｏｓｅｔｕｐｍｏｌｅｃｕｌａｒｓｔｒｕｃ ｔｕｒａｌｐａｒａｍｅｔｅｒｓａｃｃｏｒｄｉｎｇｔｏｔｈｅｔｏｐｏｌｏｇｉｃａｌｓｔｒｕｃｔｕｒｅｓｏｆｍｏｌｅｃｕｌｅｓｗｉｔｈｐｒｏｐｅｒｃｏｍｂｉｎａ ｔｉｏｎｏｆａｔｏｍｉｃｓｔｒｕｃｔｕｒａｌｐａ…     

Standard Enthalpies of Formation of Solid Complexes of Lanthanide Nitrates with Alanine

Ｇｒｅａｔｉｎｔｅｒｅｓｔｈａｓｂｅｅｎａｒｏｕｓｅｄｉｎｔｈｅｓｔｕｄｙｏｆｃｏｍｐｌｅｘｅｓｏｆｒａｒｅｅａｒｔｈｓａｌｔｓｗｉｔｈａｍｉｎｏａｃｉｄｓｂｅｃａｕｓｅｒａｒｅｅａｒｔｈｉｏｎｓｐｏｓｓｅｓｓｓｏｍｅｓｐｅｃｉａｌｆｕｎｃｔｉｏｎｓｉｎｂｉｏｃｈｅｍｉｓｔｒｙ .Ｔｈｅｙｃａｎｂｅｕｓｅｄａｓａｐｒｏｂｅｔｏｌａｂｅｌｔｈｅｃａｌｃｉｕｍｉｏｎ .Ｍｏｒｅｏｖｅｒ,ａｍｉｎｏａｃｉｄｓａｒｅｔｈｅｓｔｒｕｃｔｕｒｅｕｎｉｔｏｆｐｒｏｔｅｉｎｓ .Ｇａｏａｎｄｃｏｗｏｒｋｅｒｓｒｅｃｅ…     

Enthalpies of Solution of Complexes of Rare Earth Nitrate with L-α-Histidine in Water

The enthalpies of solution in water of complexes of RE(NO3)3(RE = La - Nd, Sm- Lu, Y) with L-α-Histidine (His) were measured at 298.15 K. The standard enthalpies of formation of RE(His)^3 (aq) were calculated. The “tetrad effect” regularity was observed from the curve, which is the enthalpies of solution plotted against the atomic numbers of the elements in lanthanide series.     

稀土氨基酸配合物的研究情况分析

系统分析了 1991～ 2 0 0 1年间发表的近百篇有关稀土与氨基酸配合物的文献 ,主要讨论作者国籍、刊物、机构、内容和方向等方面的问题。中国的科研人员对稀土氨基酸二元配合物的合成、性质、结构进行了系统的研究。从 90年代末开始 ,研究朝着稀土 氨基酸 过渡金属异核配合物和以氨基酸为配体的高pH值下镧系 羟基自组装配合物的方向发展     

Thermochemical Properties of Ternary Complexes of RE Perchlorate withGlycine and Imidazole

Ｒａｒｅｅａｒｔｈｉｏｎｓｐｏｓｅｓｓｏｍｅｓｐｅｃｉａｌｆｕｎｃｔｉｏｎｓｉｎｂｉｏｌｏｇｉｃａｌｂｏｄｙ．Ａｍｉｎｏａｃｉｄｓａｒｅｔｈｅｓｔｒｕｃｔｕｒｅｕｎｉｔｏｆｐｒｏｔｅｉｎｓ．Ｉｍｉｄａｚｏｌｅｉｓｈｅｔｅｒｏｃｌｙｃｌｉｃｃｏｍｐ...     

Photophysical Properties of Rare Earth Complexes with 3,4 Furandicarboxylic Acid and 1,10 Phenanthroline

Ｒａｒｅｅａｒｔｈｃｏｍｐｌｅｘｅｓｗｉｔｈａｒｏｍａｔｉｃｃａｒｂｏｘｙｌｉｃａｃｉｄｓｈａｖｅｅｘｃｅｌｅｎｔｌｕｍｉｎｅｓｃｅｎｃｅｐｒｏｐｅｒｔｉｅｓ,ａｎｄａｔｒａｃｔｍｕｃｈａｔｅｎｔｉｏｎｏｆｃｈｅｍｉｓｔｓ［１］．Ｉｎｒｅｃｅｎｔ...     

Synthesis, Characterization and Catalytic Activity of Propionamide Complexes of Rare Earth Chlorides

ＴｈｅｒａｒｅｅａｒｔｈｓｙｓｔｅｍｏｆＺｉｅｇｌｅｒＮａｔａｃａｔａｌｙｓｔｃａｎｂｅａｐｐｒｏｘｉｍａｔｅｌｙｄｉｖｉｄｅｄｉｎｔｏｔｗｏｍａｉｎｃａｔａｌｏｇｕｅｓ，ｔｈａｔｉｓ，ｔｈｅｔｒｉｎａｒｙｓｙｓｔｅｍａｎｄｔｈｅｂｉｎａｒｙｓｙｓ...     

Anti-Influenza Virus Activity of Heteropoly Complexes Containing Rare Earth Elements

ｎｆｌｕｅｎｚａ，ｕｓｕａｌｙｃａｕｓｅｄｂｙｉｎｆｌｕｅｎｚａｖｉｒｕｓ，ｉｓａｋｉｎｄｏｆｗｏｒｌｄｗｉｄｅｉｎｆｅｃｔｉｏｕｓｄｉｓｅａｓｅｓｔｈａｔｃａｎｎｏｔｂｅｃｏｎｔｒｏｌｅｄｅｆｅｃｔｉｖｅｌｙａｔｐｒｅｓｅｎｔ．Ｔｈｅｍｏｓｔｗｉｄ...     

Effect of Rare Earth on theFormation of Liquid ZincCorrosion ResistantChromium-carbide Layer

Effect of Rare Earth on theFormation of Liquid ZincCorrosion ResistantChromium-carbide Layer     

Luminescence Characteristic of a New Novel Coprecipitate Rare Earth Complexes

Organicelectroluminescence (OEL)hasbeenex tensivelystudiedbecauseoftheirpotentialapplicationinflatpaneldisplayssincethefirsttwo layerOELde vicewithhighefficiencyandluminancewasfabricatedin 1987[1～ 3] .Rareearth (RE)metalcomplexeshavesomegoodcharacteristics ,suchasextremelynarrowe missionbandsandhighinternalquantumefficiencies ,whicharesuitableforuseastheemissionmaterialsinOEL[4 ] .Tb3+complexwasfirstintroducedintoOELdevices ,andsharpgreenemissionfromTb3+ionhasbeenobserved[5] .Sincethen …     

Synthesis and Crystal Structure of Heteronuclear Complex of Copper and Ytrium with Glycine

ＳｙｎｔｈｅｓｉｓａｎｄＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｏｆＨｅｔｅｒｏｎｕｃｌｅａｒＣｏｍｐｌｅｘｏｆＣｏｐｐｅｒａｎｄＹｔｒｉｕｍｗｉｔｈＧｌｙｃｉｎｅＷａｎｇＲｕｉｙａｏ（王瑞瑶），ＧａｏＦｅｎｇ（高峰），ＪｉｎＴｉａｎｚｈｕ（金天柱）（...     

Complexes of Rare Earth Picrates with 1,10-Phenanthroline-N-Oxide

Rare earth picrate complexes with the ligand PhenNO,RE(PhenNO)_2(pic)_3(RE=La,Pr,Nd,Sm～Tb,Er,Y),have been prepared in non-aqueous medium.The complexes were characterized by elemen-tary analysis,molar conductance,IR,Raman,electronic,fluorescence and ~1H NMR spectra and TG-DTAtechniques.     

Voltammetric Study on the Complexes of the Rare Earths with Tetraphenylporphyrin

Fifteen rare earth-tetraphenylporphyrin(RE-TPP)complexes were directly prepared by mixing equalmolar concentrations of RE(ClO_4)_3 and H_2TPP in acetone media.The electrochemical behaviors of these com-plexes and the influence of dissolved oxygen were investigated by voltammetry.Althrough there are some differ-ence between the behaviors of light and heavy rare earth-porphyrins,the central RE ions of the all fifteen com-plexes were reduced from tervalent to divalent state,meanwhile the dissovled oxygen was reduced as superoxideion O~-.which readily combined with the complex forming peroxide additive complex such as RE-TPP·O~(2-)_2.     

Molecular Design and Electronic Structure of Polynuclear Rare Earth Complexes and Clusters

Studies on the electronic structure,molecular design,syntheses of some novel series of tetranuclear rareearth complexes in our laboratory have been reviewed.Spin-unrestricted localized INDO method was used tocalculate the electronic structure and the chemical bonding in the typical rare earth cluster Sc[Sc_6Cl_(12)Co]wasdiscussed.     

稀土元素的特殊性质及其应用

本文从稀土元素微观结构角度，揭示了稀土元素的某些特殊性质，并指出这种特性与应用机理有必然的联系。从而启迪稀土使用者，掌握和了解稀土的基本特性，才能自由地驾驭稀土的应用。     

The Thermodynamic Property of Rare Earth Complexes with L-Threonine

In this paper the stability constants and thermodynamic parameters for complexes of rare earth elementswith L-threonine have been measured systematically by potentiometry and calorimetry at 25℃ and ionicstrength of 0.15 mol/L(NaCl).The thermodynamic values for protonation of the anion of L-threonine havebeen obtained.The dependence of stability,enthalpy and entropy change of the complex upon atomic number ofcation is investigated,and the coordination of L-threonine to rare earth is also discussed in detail.     

Simultaneous Determination of Rare Earth Elements byDualSystem Iterative Target Transformation Factor Analysis

Ｉｔｉｓｖｅｒｙｄｉｆｉｃｕｌｔｔｏｄｅｔｅｒｍｉｎｅｉｎｄｉｖｉｄｕａｌｒａｒｅｅａｒｔｈｉｎｉｔｓｍｉｘｔｕｒｅｂｙｓｐｅｃｔｒｏｐｈｏｔｏｍｅｔｒｙ．Ｔｈｉｓｉｓｂｅｃａｕｓｅｍａｎｙｏｆｈｉｇｈｓｅｎｓｉｔｉｖｅｃｈｒｏｍｏｇｅｎｔｉｃｒｅ...     

Syntheses and Infrared Spectra of Rare Earth Complexes with Diethyl Phosphate

The title complexes Ln(DEP),(Ln=La,Sm,Eu,Ho and Yb)were synthesized by reaction of triethylphosphate with trivalent rare earth chlorides.The mechanism of thermo-decomposition of the complexes hasbeen studied.According to their IR spectra,the residues of the thermo-decomposition of the complexes wereidentified as Ln(PO_3)_3.Their IR spectra were measured and principal IR bands were assigned.The experimentalresults of the IR spectra of the complexes show that the title complexes have the same coordination form and mo-lecular configuration as rare earth,e.g.Sm,complex with dimethyl phosphate(Sm(DMP)_3).Each of the rareearth ion links three rare earth ions nearby through double“O-P-O”bridges to form a special network ofrings-linking-rings,each of which consists of twenty-four atoms.The Ln-O bond is principally ionic.     

Synthesis and Characterization of Rare Earth Complexes with Phthalanilic Acids and Amino Acids

The phthalanilic acid compounds and the.anuno acid compounds have been follnd to havewide application as drug and plant groWth stimulator. Their transition metal complexes haveexcellent biological activities. Supported byNorthwest Highland Biological Research institute of China Academy of Sciellces, we haveachieved remarkable increasing yield of winterwheat at Xining Farm for three years. Thedrixed ligand complexes of this preparation areprobably new kind of the plant growth regulator.1 Ex…