| Characteristics of Trivalent Lanthanides in Coordination Chemistry |
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| 作者姓名： | 薛冬峰 左森 Henryk Ratajczak |
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| 作者单位： | [1]StateKeyLaboratoryofFineChemicals,SchoolofChemicalEngineering,DalianUniversityofTechnology,Dalin116012,China [2]FacultyofChemistry,UniversityofWroclaw,ul.F.Joliot-Curie14,50-383Wroclaw,Poland [3]FacultyofChemistry,UniversityofWroclaw,ul.F.Joliot-Curie14,50-383Wroclaw,Poland／／InstituteofLowTemperatureandStructureResearch,PolishAcademyofSciences,P.0.Box937,50-950Wroclaw2,Poland |
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| 基金项目： | ProjectsupportedbyFoundationofNationalExcellentDoctoralDissertationofChina(FANEDD #2 0 0 3 2 2 ) |
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| 摘 要： | Some basic characteristics of lanthanide-oxygen bonds in various trivalent lanthanide metal-organic complexes are quantitatively studied by the bond valence model. Some important relationships among the electronegativity, bond valence parameter, bond length and lanthanide coordination number in these complexes are generally found , which show that for each trivalent lanthanide cation all calculated parameters may well be correlated with its coordination number in their coordination complexes. Specifically ,32 new data for the bond valence parameter are first calculated in this work. An approximate linear relationship between the Ln - O bond valence parameter and the coordination number of Ln^3 is obtained. The Ln - O bond length increases with the increase in the lanthanide coordination number. The difference of electronegative values decreases with the increase in the lanthanide coordination number.
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| 关 键 词： | 镧 配位化学 配位数 稀土元素 三价 |
Characteristics of Trivalent Lanthanides in Coordination Chemistry |
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| Henryk Ratajczak.Characteristics of Trivalent Lanthanides in Coordination Chemistry[J].Journal of Rare Earths,2004,22(6):743-745. |
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| Authors: | Henryk Ratajczak |
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| Abstract: | Some basic characteristics of lanthanide-oxygen bonds in various trivalent lanthanide metal-organic complexes are quantitatively studied by the bond valence model. Some important relationships among the electronegativity, bond valence parameter, bond length and lanthanide coordination number in these complexes are generally found , which show that for each trivalent lanthanide cation all calculated parameters may well be correlated with its coordination number in their coordination complexes. Specifically,32 new data for the bond valence parameter are first calculated in this work.An approximate linear relationship between the Ln-O bond valence parameter and the coordination number of Ln3 is obtained.The Ln-O bond length increases with the increase in the lanthanide coordination number.The difference of electronegative values decreases with the increase in the lanthanide coordination number. |
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| Keywords: | lanthanides coordination chemistry: coordination number rare earths |
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