E. Jakusek, P. Freundlich, H.A. Kołodziej, S. Sorriso ∗
{"title":"非极性溶剂中介电弛豫测量的单-和1,1 ' -二苯甲酰二茂铁分子动力学研究","authors":"E. Jakusek, P. Freundlich, H.A. Kołodziej, S. Sorriso ∗","doi":"10.1016/0378-4487(82)80061-7","DOIUrl":null,"url":null,"abstract":"<div><p>Dielectric relaxation measurements were carried out on mono-, and 1,1′-di-benzoylferrocene in p-xylene in the temperature and frequency range of 293–313 K and 7.5–38.2 GHz, respectively, at various concentrations. For both molecules only one absorption was found in the GHz-region, which can be assigned to whole molecule reorientation and/or (less probably) to the internal rotation around the axis perpendicular to the cyclopentadienyl rings. In both cases a Debye-like behaviour was observed. The following macroscopic dielectric relaxation times (τ) were calculated: compound, T/K, τ/ps; monobenzoylferrocene, 293, 39.8; 303, 37.3; 313, 35.0; dibenzoylferrocene, 293, 63.2; 303, 51.9; 313, 41.2. From the Eyring diagram values of 1.6 and 2.3 kcal.mol<sup>−1</sup> were obtained, respectively, for the activation enthalpy of mono-, and di-substituted derivative. A comparison was made among the various ferrocenes studied to date in our laboratory.</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":"24 4","pages":"Pages 283-295"},"PeriodicalIF":0.0000,"publicationDate":"1982-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(82)80061-7","citationCount":"2","resultStr":"{\"title\":\"Molecular dynamics investigations on mono-, and 1,1′-di-benzoylferrocene from dielectric relaxation measurements in a non-polar solvent\",\"authors\":\"E. Jakusek, P. Freundlich, H.A. Kołodziej, S. Sorriso ∗\",\"doi\":\"10.1016/0378-4487(82)80061-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Dielectric relaxation measurements were carried out on mono-, and 1,1′-di-benzoylferrocene in p-xylene in the temperature and frequency range of 293–313 K and 7.5–38.2 GHz, respectively, at various concentrations. For both molecules only one absorption was found in the GHz-region, which can be assigned to whole molecule reorientation and/or (less probably) to the internal rotation around the axis perpendicular to the cyclopentadienyl rings. In both cases a Debye-like behaviour was observed. The following macroscopic dielectric relaxation times (τ) were calculated: compound, T/K, τ/ps; monobenzoylferrocene, 293, 39.8; 303, 37.3; 313, 35.0; dibenzoylferrocene, 293, 63.2; 303, 51.9; 313, 41.2. From the Eyring diagram values of 1.6 and 2.3 kcal.mol<sup>−1</sup> were obtained, respectively, for the activation enthalpy of mono-, and di-substituted derivative. A comparison was made among the various ferrocenes studied to date in our laboratory.</p></div>\",\"PeriodicalId\":100049,\"journal\":{\"name\":\"Advances in Molecular Relaxation and Interaction Processes\",\"volume\":\"24 4\",\"pages\":\"Pages 283-295\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1982-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0378-4487(82)80061-7\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Molecular Relaxation and Interaction Processes\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0378448782800617\",\"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/0378448782800617","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Molecular dynamics investigations on mono-, and 1,1′-di-benzoylferrocene from dielectric relaxation measurements in a non-polar solvent
Dielectric relaxation measurements were carried out on mono-, and 1,1′-di-benzoylferrocene in p-xylene in the temperature and frequency range of 293–313 K and 7.5–38.2 GHz, respectively, at various concentrations. For both molecules only one absorption was found in the GHz-region, which can be assigned to whole molecule reorientation and/or (less probably) to the internal rotation around the axis perpendicular to the cyclopentadienyl rings. In both cases a Debye-like behaviour was observed. The following macroscopic dielectric relaxation times (τ) were calculated: compound, T/K, τ/ps; monobenzoylferrocene, 293, 39.8; 303, 37.3; 313, 35.0; dibenzoylferrocene, 293, 63.2; 303, 51.9; 313, 41.2. From the Eyring diagram values of 1.6 and 2.3 kcal.mol−1 were obtained, respectively, for the activation enthalpy of mono-, and di-substituted derivative. A comparison was made among the various ferrocenes studied to date in our laboratory.