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N-二乙酸基取代四氮杂大环与铀、钍配合物的合成、表征及稳定常数的测定

N-二乙酸基取代四氮杂大环与铀、钍配合物的合成、表征及稳定常数的测定[J]. 核化学与放射化学, 1998, 20(1): 61-61.
引用本文: N-二乙酸基取代四氮杂大环与铀、钍配合物的合成、表征及稳定常数的测定[J]. 核化学与放射化学, 1998, 20(1): 61-61.

N-二乙酸基取代四氮杂大环与铀、钍配合物的合成、表征及稳定常数的测定

  • 摘要: 用两个新型N-二乙酸基取代四氮杂大环配体(H2L3和H2L4)与硝酸铀酰和硝酸钍反应制得固体配合物,经红外光谱分析(IR)和元素分析确定配合物的组成分别为Th(H2L3)·4NO3·H2O,Th(H2L4)·4NO3·7H2O和UO2(H2L4)·2NO3·12H2O。通过pH电位滴定和计算机数据拟合获得在(25.0±0.1)℃时,0.5mol/LKNO3水溶液中H2L4的分步离解常数及与Th4+和UO2+2形成1∶1型配合物的稳定常数。
    Abstract: SYNTHESIS,CHARACTERIZATION AND DETERMINATION OF STABILITY CONSTANT OF Th4+ AND UO2+2 COMPLEXES OF NDIACETIC ACID SUBSTITUTED TETRAAZAMACROCYCLEBi Jianhong(Department of Chemistry,Anhui Institute of Education,Hefei 230061)Zhao Xiangda Xie Fuxin Ni Shisheng(Department of Chemistry,Anhui University,Hefei 230039)ABSTRACTThe solid complexes of H2L3(5,12diphneyl7,14dimethyl1,4,8,11tetraazamacrocyclotetradecaneN,N″diacetic acid) with Th4+ and H2L4(2,2,4,13,13,15hexamethyl1,5,12,16tetraazacyclodocosaneN′,Ndiacetic acid) with Th4+ and UO2+2 have been synthesized in water solutions and characterized by elemental analysis and IR spectra.The complexes have constant stoichiometry Th(H2L3)·4NO3·H2O,Th(H2L4)·4NO3·7H2O and UO2(H2L4)·2NO3·12H2O.The dissociation constants of H2L4 and the stability constants of 1∶1 complexes of H2L4 with Th4+ and UO2+2 are determined by potentiometric titration in 0.5 mol/L KNO3 solution at (25±0.1)℃.The results obtained are discussed.Key words Tetraazamacrocycle Ndiacetic acid Uranium Thorium Stability constant
  • [1] 1LiqinC,LaurenceKT,JideX,etal.SynthesisandCharacterizationof5,12-Dimethyl-7,14-diphenyl-1,4,8,11-tetraazacyclotetradecane-4,11-diaceticAcidandItsTransitionMetalComplexes,CrystalStructureoftheCopper(Ⅱ)ComplexoftheMacrocycle.JCanChem,1993,71:18052ArnaudNF.SolutionChemistryofLanthanideMacrocyclicComplexes.ChemSocReviews,1994,23(4):2353陈礼勤,徐济德,倪诗圣.2,2,4,13,13,15-六甲基-1,5,12,16-四氮杂环二十二烷-N′,N-二乙酸及其镧系配合物的合成和表征.无机化学学报,1991,7(2):138—1424ZuberhlerAD,KadenTA.TITFITaComprehensiveProgramforNumericalTreatmentofPotentiometricDatabyUsingAnalyticalDerivativesandAutomaticalyOptimizedSubroutinesWiththeNewton-Gauss-MarquardtAlgoirthm.Talanta,1982,29:201-2065毕建洪.四氮杂N-乙酸基取代大环及其配合物的合成和热力学研究〔硕士论文〕,合肥:安徽大学,19886NakamotoK.InfraredandKamanSpectraofInorganicandCoordinationCompounds.3rdEd.NewYork:JohnWiley&Sons,1978.2267DesreuxJF,MercinyE,LoncinMF,etal.NuclearMagneticResonanceandPotentiomerticStudiesoftheProtonationSchemeofTwoTetraazaTatraaceticMacrocycles.InorgChem,1981,20:987-9918KadenTA.SynthesisandMetalComplexesofAza-MacrocyclesWithPendantArmsHavingAdditionalLigatingGroups.TopicsinCurrentChem,1984,121:157-1789杭州大学化学系分析化学教研室.分析化学手册(第二分册).北京:化学工业出版社,1982.57310武汉大学、吉林大学等校.无机化学.第三版.北京:高等教育出版社,1994.1103
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  • 刊出日期:  1998-02-19

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