Coordination chemistry of lanthanide catecholates |
| |
| Institution: | 1. School of Chemistry and Chemical Engineering, and Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng, Shangdong 252000, PR China;2. Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng, Shangdong 252059, PR China;1. Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de Beaulieu, Bât 10A, 35042 Rennes cedex, France;2. Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznan, Poland;1. Temple Hall 431, Department of Chemistry, Missouri State University, Springfield, MO 65897, USA;2. Department of Chemistry and Biochemistry, University of Minnesota-Duluth, 1039 University Drive, Duluth, MN 55812, USA;3. Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;1. Department of Chemistry, Faculty of Art and Science, Harran University, Sanliurfa 63190, Turkey;2. Research Center for Science and Technology, Harran University, Sanliurfa 63190, Turkey;3. Department of Chemistry, Faculty of Science, Dicle University, Diyarbakır 21280, Turkey;1. Laboratoire de Chimie de Coordination du CNRS, 205, route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France;2. Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France;3. Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein- Leopoldshafen, Germany;4. Institut Néel, CNRS / Université Grenoble Alpes, 25 rue des Martyrs, F-38000 Grenoble, France |
| |
| Abstract: | The solution complexation chemistry of Eu(III) and Lu(III) with several monocatecholates 1,2- dihydroxy(3,5-disulfo)benzene (tiron); 4-nitrocatechol (n-cat); catechol; 5-sulfo-2,3-dihydroxy-N,N- dimethylbenzamide (DMBS)], and a tetracatecholate (3,4,3-LICAMS) has been investigated using potentiometric and spectrophotometric methods. These two trivalent lanthanides form complexes of the same composition with those of Lu(III) more stable. At pH 8 only 1:1 complexes of Eu(III) and Lu(III)with tiron are formed, regardless of the amount of excess ligand present. Complexes of Eu(III) with catechol of 1:1, 1:2 and 1:3 are formed at pH 8.0, 10.0 and 12.0, respectively. The octadentate ligand 3,4,3-LICAMS and the simple catechols 4-nitrocatechol and DMBS form complexes with 1.5 catechol groups per Eu(III) or Lu(III). The formation constants of these complexes have been determined. Discussion of these differences in catecholate coordination chemistry with lanthanides, as well as comparison of these results with those obtained for trivalent and tetravalent transition metals and actinides, are presented. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
