Bis(pentamethylene)urea complexes of the lanthanide nitrates: synthesis, characterization, properties
| Autor: | M. K. S. Batista, Klaus Zinner, D.M Araújo Melo, L.B. Zinner, G. Vicentini, Julio Zukerman-Schpector, E. P. Marinho, A. M. Garrido Pedrosa, H. K. S. de Souza |
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| Rok vydání: | 2003 |
| Předmět: |
Lanthanide
Denticity Chemistry Stereochemistry Coordination number Infrared spectroscopy Molar conductivity Crystal structure Condensed Matter Physics Electronic Optical and Magnetic Materials Inorganic Chemistry Crystallography Materials Chemistry Ceramics and Composites Molecule Physical and Theoretical Chemistry Monoclinic crystal system |
| Zdroj: | Journal of Solid State Chemistry. 171:242-245 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/s0022-4596(02)00159-7 |
| Popis: | Lanthanide nitrate complexes of bis(pentamethylene)urea (BPMU) with general formula Ln(NO 3 ) 3 3BPMU, where Ln: La, Nd, Sm, Eu, Ho and Er have been prepared and characterized based on CHN elemental analyses, lanthanide titration with EDTA, molar conductivity, spectroscopic data and thermal studies. The infrared spectra show that ligands (BPMU) are bonded through the carbonyl oxygen, nitrate counter-ions are bidentate linked to the central ions. The structure of the neodymium complex was determined. The crystal is monoclinic, P2 1/c , Z = 4, with the following parameters: a = 10.148(1) A, b = 21.879(2), c = 19.154(2) A, β = 104.11(1)°, V = 4124.3(7) A 3 . The polyhedron is a distorted tricapped trigonal prism, coordination number nine. |
| Databáze: | OpenAIRE |
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