稀土与PMBP和茚三酮三元配合物的研究

以１－苯基－３－甲基－４－苯甲酰基吡唑啉酮－５（ＨＰＭＢＰ）为第一配体，茚三酮（Ｎｉｎ）为第二配体，合成了三种未见文献报道具有组成为Ｌｎ（ＰＭＢＰ）＿３·Ｎｉｎ·３Ｈ＿２Ｏ（Ｌｎ＝Ｌａ、Ｎｄ、Ｇｄ）的稀土配合物。用元素分析、摩尔电导、紫外可见光谱、红外光谱、差热－热重谱、￣１Ｈ核磁共振谱和ｘ－射线粉末衍射对配合物进行了表征。     

Keggin结构钼钨硅杂多酸及其稀土衍生物的氧化还原性质研究

利用循环伏安和极谱研究了Ｋｅｇｇｉｎ结构钼钨硅杂多酸Ｈ４ＳｉＭｏ１２－ｎＷｎＯ４０（记为ＳｉＭｏ１２－ｎＷｎ，ｎ＝２，４，６，８，１０）及其稀土衍生物Ｋ１０Ｈ３〔Ｌｎ（ＳｉＭｏ６Ｗ５Ｏ３９）２〕（记为Ｌｎ（ＳｉＭｏ６Ｗ５）２，Ｌｎ＝Ｌａ３＋，Ｃｅ３＋，Ｐｒ３＋，Ｎｄ３＋，Ｓｍ３＋，Ｅｕ３＋，Ｇｄ３＋，Ｄｙ３＋，Ｙｂ３＋）在水溶液中的氧化还原性质，讨论了取代原子和酸度对杂多阴离子氧化还原性质的影响，探讨了极谱半波电位与ｐＨ的关系，并根据静电模型对杂多配合物的氧化还原规律性给予了合理的说明。     

MNA—TBP从盐酸介质中萃取Ir（IV）

对ＭＮＡ－ＴＢＰ从盐酸介质中萃取Ｉｒ（Ⅳ）作了研究。结果表明：ＭＮＡ－ＴＢＰ对Ｉｒ（Ⅳ）萃取有协同效应。当ＭＮＡ和ＴＢＰ在正辛烷中的浓度各为０．４５ｍｏｌ／Ｌ，待萃液中ＨＣｌ总浓度为４ｍｏｌ／Ｌ，铱浓度为１７３．１３μｇ／ｍｌ，相比为１时，协萃系数Ｒ为２．３３，协萃合物的组成为（ＭＮＡＨ）＾＋．ＩｒＣｌ６＾２－．（ＨＴＢＰ）＾＋。     

P204萃取分离——ICP／AES法测定CeO2标准物质中La,Pr,Nd,Sm,Gd和Y

本文采用ＨＮＯ３和Ｈ２Ｏ２溶解试样，在８ｍｏｌ／ＬＨＮＯ３介质中，以溴酸钾将Ｃｅ（Ⅱ）氧化成Ｃｅ（Ⅳ）继以Ｐ２０４／ＣＣｌ４萃取Ｃｅ（Ⅳ），将三价稀土元素与四个铈分离，用ＩＣＰ－ＡＥＳ法测定ＣｅＯ２标准物质中Ｌａ，Ｐｒ，Ｎｄ，Ｓｍ，Ｇｄ和Ｙ，分析结果均落在标准值的置信区间内ＲＳＤ〈６％。     

PMBP－TBP协同萃取Sr（Ⅱ）的研究及应用

研究了微量碱土金属镁、钙、锶、钡与ＰＭＢＰ－ＴＢＰ形成萃合物，其摩尔比为Ｓｒ：ＰＭＢＰ：ＴＢｂ＝１：２：２。在ｐＨ８．Ｏ时用ＰＭＢＰ－ＴＢＰ协同萃取Ｓｒ（Ⅱ），用盐酸反萃后由ＩＣＰ－ＡＥＳ法测定。该方法使锶的检出限达到１０￣（－４）μｇ／ｍｌ，应用于样品分析中，得到了满意的结果。     

P_（204）萃取分离──ICP／AES法测定CeO_2标准物质中La、Pr、Nd、Sm、Gd和Y

本文采用ＨＮＯ３和Ｈ２Ｏ２溶解试样，在８ｍｏｌ／ＬＨＮＯ３介质中，以溴酸钾将Ｃｅ（Ⅲ）氧化成Ｃｅ（Ⅳ），继以Ｐ２０４／ＣＣｌ４萃取Ｃｅ（Ⅳ），将三价稀土元素与四价铈分离，用ＩＣＰ－ＡＥＳ法测定ＣｅＯ２标准物质中Ｌａ、Ｐｒ、Ｎｄ、Ｓｍ、Ｇｄ和Ｙ，分析结果均落在标准值的置信区间内，ＲＳＤ＜６％。     

镧系元素高氯酸盐苯丁基亚砜配合物的合成与表征

本文以稀土高氯酸盐ＲＥ（ＣｌＯ_４）_３ｎＨ_２Ｏ（ＲＥ＝Ｌａ~（３＋）、Ｃｅ~（３＋）、Ｐｒ~（３＋）、Ｎｄ~（３－）、Ｓｍ~（３－）、Ｅｕ（３＋），ｎ＝６～７）与苯丁基亚砜ＰＢＳＯ（Ｃ_６Ｈ_５Ｃ_４Ｈ_９）在无水乙醇体系中合成出六个新配合物，并对配合物进行了元素分析，稀土离子含量测定，配体ＰＢＳＯ含量测定ＣｌＯ_４~－含量测定、ＩＲ谱、导电、ＴＧ－ＤＴＡ分析及Ｘ－射线粉末衍射。确定了配合物的组成为［ＲＥ（ＢＰＳＯ）_７（ＣｌＯ_４）］（ＣｌＯ_４）_２，配位数为８，电解质类型为１：２。     

稀土气态配合物LnAl_3Cl_(12)稳定性的线性分析

对稀土气态配合物ＬｎＡｌ３Ｃｌ１２的稳定性进行线性分析，发现其稳定常数的对数值，与镧系离子势（Ｚ＋／ｒ）之间存在线性关系，将镧系稀土分为两组，Ｌａ－Ｇｄ和Ｔｂ－Ｌｕ；与镧系离子基态角量子数存在斜Ｗ效应，将镧系稀土分为四组，Ｌａ－Ｎｄ，Ｐｍ－Ｇｄ，Ｔｂ－Ｈｏ，Ｅｒ－Ｌｕ。在每一组内，ＬｎＡｌ３Ｃｌ１２的稳定常数呈线性变化     

t－BAMBP萃取铷、铯反应机理及热力学函数研究

研究了ｔ－ＢＡＭＢＰ（简称ＲＯＨ）从碱性水相中萃取铷、铯的机理。以斜率法、饱和法测定萃合物组成为ＭＯＲ·３ＲＯＨ（Ｍ表示Ｒｂ￣＋、Ｃｓ￣＋）。ＲＯＨ萃取铷、铯为阳离子交换机理，萃取方程式为＋２（ＲＯＨ）＿２（ＭＯＲ·３ＲＯＨ）。由温度效应按ｌｇＤ－Ｔ￣（－１）的直线斜率，求得萃取热焓△Ｈ，由△Ｈ和表观萃取平衡常数Ｋ便可计算自由能△Ｇ和熵变△Ｓ。萃取铷、铯的过程是一个放热反应     

P204萃取分离ICP-AES法测定CeO_2标准物质中La,Pr,Nd,Sm,Gd和Y

采用ＨＮＯ_３和Ｈ_２Ｏ_２一溶解试样,在８ｍｏｌ／ＬＨＮＯ_３介质中,以溴酸钾将Ｃｅ（Ⅲ）氧化成Ｃｅ（Ⅳ）,继以Ｐ２０４／ＣＣｌ_４萃取Ｃｅ（Ⅳ）,将三价稀土元素与四价体分离,用ＩＣＰ—ＡＥＳ法测定ＣｅＯ_２标准物质中Ｌａ,Ｐｒ．Ｎｄ,Ｓｍ,Ｇｄ和Ｙ,分析结果均落在标准值的置信区问内,ＲＳＤ＜６％．     

1，2-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)乙二酮-[1，2]与三正辛基氧化膦协同萃取RE(Ⅲ)的性能和机理研究

研究了1，2-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)乙二酮-[1，2](H     

Synthesis, Catalysis of Rare Earth Complexes with Aliphatic Noncyclic Polyether-Amino Acid Schiff Base

Coordination chemistry of rare earth with Schiffbase has developed rapidly in the last fewyears ,butthe majority of the complexes studied are derivedfromaromatic Schiff base .So far less papers of rare earthcomplex with aliphatic Schiff base have been rep…     

Raman spectroscopy study of the phase transitions in rare-earth metal trichlorides

The structures of crystalline (over a wide temperature range) and molten rare-earth metal-LnCl₃ (Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy) trichlorides are comprehensively studied by Raman spectroscopy.     

Preparation and Characterization of Heteropolytungstoarsenate Complexes Containing Lanthanide Elements

ＰｒｅｐａｒａｔｉｏｎａｎｄＣｈａｒａｃｔｅｒｉｚａｔｉｏｎｏｆＨｅｔｅｒｏｐｏｌｙｔｕｎｇｓｔｏａｒｓｅｎａｔｅＣｏｍｐｌｅｘｅｓＣｏｎｔａｉｎｉｎｇＬａｎｔｈａｎｉｄｅＥｌｅｍｅｎｔｓ￥ＷａｎｇＷｅｉｑｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｃ...     

Synthesis and Characterization of Rare Earth Complexes of Ferrocenylcarbonylhydrazine

Ｔｈｅｍｅｔａｌｃｏｍｐｌｅｘｅｓｏｆｈｙｄｒａｚｉｄｅｓｈａｖｅａｔｔｒａｃｔｅｄｃｏｎｓｉｄｅｒａｂｌｅｉｎｔｅｒｅｓｔｏｗｉｎｇｔｏｔｈｅｉｒａｎｔｉｆｕｎｇａｌａｎｄａｎｔｉｂａｃｔｅｒｉａｌａｃｔｉｖｉｔｉｅｓ[1 ,2 ] .Ｔｈｅｙｃａｎａｌｓｏｂｅｕｓｅｄａｓａｎａｌｙｔｉｃａｌｒｅａｇｅｎｔｓ[3 ]ａｎｄｅｘｔｒａｃｔｉｎｇａｇｅｎｔｓｆｏｒｍｅｔａｌｓａｌｔｓ[4 ] .Ｍａｎｙｃｏｍｐｌｅｘｅｓｏｆｈｙｄｒａｚｉｄｅｓｈａｖｅｂｅｅｎｓｙｎｔｈｅｓｉｚｅｄａｎｄｃｈａｒａｃｔｅｒｉｚｅｄ[5]…     

Solvent extraction of Pr and Nd (III) from chloride-acetate medium by 8-hydroquinoline with and without 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester as an added synergist in heptane diluent

In this paper, solvent extraction of Pr (III) and Nd (III) using 8-hydroxyquinoline in chloride-acetate medium has been systematically investigated. The effect of various parameters, such as equilibrium time, aqueous pH, extractant concentration, acetate ion concentration, chloride ion concentration, and organic solvent, on the extraction has been discussed. The synergistic effect in the mixtures of 8-hydroxyquinoline (HQ) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (P507) has been explored, and the largest synergistic enhancement factor has been calculated. The separations of Pr (III), Nd (III) and La (III) by 8-hydroquiloline alone and by mixtures of HQ and P507 have been studied, and the results demonstrate that it is possible to separate Pr (III), Nd (III) and La (III) with the mixtures of HQ and P507. At last, the stripping of Pr, Nd and La (III) has been performed.     

双水杨醛1,6-己二胺希夫碱轻稀土配合物的合成和表征

合成并表征了双水杨醛缩 1,6 己二胺希夫碱配体 (C2 0 H2 4 N2 O2 ,以L表示 )与轻稀土Ln3 的 7种新的固体配合物 [LnL2 ](NO3) 3(Ln =La、Ce、Pr、Nd、Sm、Eu、Gd)。利用元素分析、摩尔电导、红外光谱、电子光谱、X射线衍射物相分析、热分析方法进行表征。中心金属离子Ln3 与希夫碱配体中的亚胺氮和酚羟基中的氧发生配位 ,配位数为 8。     

Complexation of N＇- [1-（3-aminophenyl）ethylidine] isonicotinohydrazide with La3＋, Pr3＋, Nd3＋, Sm3＋, Eu3＋ and Gd3＋ ions and associated thermodynamics

A novel Schiff base N′-[1-(3-aminophenyl)ethylidine]isonicotinohydrazide was prepared and its complexation behavior towards some selected lanthanides had been studied employing pH-metric and calorimetric titration and spectral techniques. pH-metric studies were carried out for the trivalent La, Pr, Nd, Sm, Eu, and Gd complexes in 30% aqueous-dioxane medium at constant ionic strength of 0.05 mol/L NaClO4 and at different temperatures of 293, 303 and 313 K. The proton-ligand formation constants of the ligand indicated the presence of only one dissociable proton while the metal-ligand formation constants were compatible with the formation of 1:1 Ln(Ⅲ) complexes. The sta-bility of the complexes followed the order: La3+Gd3+, showing a break at gadolinium. The thermodynamic parame-ters, ΔG, ΔH and ΔS associated with protonation and complexation reactions were negative which suggested that all reactions were exother-mic and enthalpy-driven. Isothermal calorimetric studies of Gd3+-aeINH systems at 303 K also showed exothermic nature of the complexation reaction and formation of 1:1 complex in agreement with the pH-metric data. Formation of 1:1 complexes was confirmed by the characteriza-tion of Nd(Ⅲ) complex. A seven coordinated geometry was assigned for the complex based on its elemental and spectral data.     

Synthesis, Characterization of α-Oxopentanedioic Acid-Isonicotinoyl Hydrazone Rare Earth-Complexes and Relaxivity of Gd-complex

Themagneticresonanceimaging (MRI)tech niqueforthemedicineisveryusefultodiagnosepre tumorandbloodvesseldiseaseinheartandbrainandothermalignantpre diseases .Therefore ,specialatten tionhasbeenalsopaidtoMRIcontrastagents ,whichareindispensablediagnosingdrugsforthemagneticresonanceimagingtechnique[1,2 ] .Gadolinium (Ⅲ)complexwithsomepolycarboxylicandpolyaminelig ands ,suchasGd(DTPA)·nH2 O ,waswidelyusedincliniclongago .OurpreviousworkshowsthatsomepolycarboxylicSchiffbasecomplexeswithrareea…