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Experimental and Molecular Dynamics Simulation Study of the Sublimation and Vaporization Energetics of Iron Metalocenes. Crystal Structures of Fe(η5-C5H4CH3)2 andFe[(η5-(C5H5)(η5-C5H4CHO)]
Universidade de Lisboa, Lisboa, Portugal.ORCID iD: 0000-0002-0086-5536
Instituto Superior Tecnico da Universidade Tecnica de Lisboa, Lisboa, Portugal.
Instituto Superior Tecnico da Universidade Tecnica de Lisboa, Lisboa, Portugal.
Universidade de Lisboa, Lisboa, Portugal.
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2008 (English)In: Journal of Physical Chemistry A, ISSN 1089-5639, E-ISSN 1520-5215, Vol. 112, 2977-2987 p.Article in journal (Refereed) Published
Abstract [en]

The standard molar enthalpies of sublimation of ferrocene, 1,1'-dimethylferrocene, decamethylferrocene, ferrocenecarboxaldehyde and R-methylferrocenemethanol, and the enthalpy of vaporization of N,N-dimethyl-(aminomethyl)ferrocene, at 298.15 K, were determined by Calvet-drop microcalorimetry and/or the Knudsen effusion method. The obtained values were used to assess and refine our previously developed force field for metallocenes. The modified force field was able to reproduce the ΔsubH°m and ΔvapH°m values of the test-set with an accuracy better than 5 kJ·mol-1, except for decamethylferrocene, in which case the deviation between the calculated and experimental ΔsubH°m values was 16.1 kJ·mol-1. The origin of the larger error found in the prediction of the sublimation energetics of decamethylferrocene, and which was also observed in the estimation of structural properties (e.g., density and unit cell dimensions), is discussed. Finally, the crystal structures of Fe(η5-C5H4CH3)2 and Fe[(η5-(C5H5)(η5-C5H4CHO)] at 293 and 150 K, respectively, are reported.

Place, publisher, year, edition, pages
2008. Vol. 112, 2977-2987 p.
National Category
Physical Chemistry
URN: urn:nbn:se:kth:diva-94158DOI: 10.1021/jp7107818ISI: 000254540800027OAI: diva2:525677
QC 20120619Available from: 2012-05-08 Created: 2012-05-08 Last updated: 2012-06-19Bibliographically approved

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Lousada, Cláudio M.
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