Molecular Motions in Halogen-Bridged One-Dimensional Pt Complexes, [PtII(en)2][PtIVX2(en)2](ClO4)4 (X = Cl, Br) Studied by 2H and 1H NMR
| العنوان: | Molecular Motions in Halogen-Bridged One-Dimensional Pt Complexes, [PtII(en)2][PtIVX2(en)2](ClO4)4 (X = Cl, Br) Studied by 2H and 1H NMR |
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| المؤلفون: | Ryuichi Ikeda, Toru Hachisuka, Noriyoshi Kimura, Yukitaka Nakano |
| المصدر: | Zeitschrift für Naturforschung A. 57:413-418 |
| بيانات النشر: | Walter de Gruyter GmbH, 2002. |
| سنة النشر: | 2002 |
| مصطلحات موضوعية: | Crystallography, Deuterium, Chemistry, Halogen, Relaxation (NMR), Ethylenediamines, Spin–lattice relaxation, Proton NMR, General Physics and Astronomy, Protonation, Physical and Theoretical Chemistry, Mathematical Physics, Spectral line |
| الوصف: | 2H and 1H NMR measurements were performed on crystalline [Pt(en)2][PtX2(en)2](ClO4)4 (X = Cl, Br), where the protonated and partially deuterated ethylenediamines (en’s), NH2(CH2)2NH2, NH2(CD2)2NH2 and ND2(CH2)2ND2 were used as ligands. Measurements of 2H and 1H NMR spin-lattice relaxation times showed the presence of motions of en chelate rings at the temperatures near the phase transitions, whereas broad 2H NMR spectra and the reported X-ray diffraction data showed no marked motions. These results were consistently explained by introducing the en puckering motion between highly asymmetric potential wells with an energy difference of 10 - 13 kJ mol-1. This difference was shown to be much larger than 2 - 5 kJ mol-1, reported for the iodo-complex, [Pt(en)2][PtI2(en)2](ClO4)4 |
| تدمد: | 1865-7109 0932-0784 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::5c4e740920a64c4d2025a917533809e1 https://doi.org/10.1515/zna-2002-6-722 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........5c4e740920a64c4d2025a917533809e1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18657109 09320784 |
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