{"title":"高氯酸铝在甲醇和乙醇中的配体交换速率的PMR研究","authors":"Iwona Wawer","doi":"10.1016/0378-4487(82)80051-4","DOIUrl":null,"url":null,"abstract":"<div><p>The kinetics of exchange of the whole molecule between solvation sphere of Al<sup>3+</sup> and bulk at Al(ClO<sub>4</sub>)<sub>3</sub> in CH<sub>3</sub>0D, CH<sub>3</sub>CD<sub>2</sub>0D and CD<sub>3</sub>CH<sub>2</sub>0D has been studied by means of line-shape analysis of PMR spectra of methyl and methylene groups. The activation enthalpy Δ H<sup>≠</sup> of 65 kJ/mol for methanol and 52 kJ/mol for ethanol were found. The exchange at 25°C is about 70 times faster for ethanol than for methanol.</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":"23 4","pages":"Pages 269-277"},"PeriodicalIF":0.0000,"publicationDate":"1982-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(82)80051-4","citationCount":"4","resultStr":"{\"title\":\"PMR study of ligand exchange rates in aluminium perchlorate solutions in methanol and ethanol\",\"authors\":\"Iwona Wawer\",\"doi\":\"10.1016/0378-4487(82)80051-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The kinetics of exchange of the whole molecule between solvation sphere of Al<sup>3+</sup> and bulk at Al(ClO<sub>4</sub>)<sub>3</sub> in CH<sub>3</sub>0D, CH<sub>3</sub>CD<sub>2</sub>0D and CD<sub>3</sub>CH<sub>2</sub>0D has been studied by means of line-shape analysis of PMR spectra of methyl and methylene groups. The activation enthalpy Δ H<sup>≠</sup> of 65 kJ/mol for methanol and 52 kJ/mol for ethanol were found. The exchange at 25°C is about 70 times faster for ethanol than for methanol.</p></div>\",\"PeriodicalId\":100049,\"journal\":{\"name\":\"Advances in Molecular Relaxation and Interaction Processes\",\"volume\":\"23 4\",\"pages\":\"Pages 269-277\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1982-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0378-4487(82)80051-4\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Molecular Relaxation and Interaction Processes\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0378448782800514\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Molecular Relaxation and Interaction Processes","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0378448782800514","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
PMR study of ligand exchange rates in aluminium perchlorate solutions in methanol and ethanol
The kinetics of exchange of the whole molecule between solvation sphere of Al3+ and bulk at Al(ClO4)3 in CH30D, CH3CD20D and CD3CH20D has been studied by means of line-shape analysis of PMR spectra of methyl and methylene groups. The activation enthalpy Δ H≠ of 65 kJ/mol for methanol and 52 kJ/mol for ethanol were found. The exchange at 25°C is about 70 times faster for ethanol than for methanol.
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