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Short chain lead (II) alkanoates as ionic liquids and glass formers: A d.s.c., X-ray diffraction and FTIR spectroscopy study

Impacto



Martínez Casado, Francisco Javier y Sánchez Arenas, Ángel Antonio y García Pérez, María Victoria y Redondo Yélamos, María Isabel y López Andrés, Sol y Rodríguez Cheda, José Antonio (2007) Short chain lead (II) alkanoates as ionic liquids and glass formers: A d.s.c., X-ray diffraction and FTIR spectroscopy study. Journal of chemical thermodynamics, 39 (3). pp. 455-461. ISSN 0021-9614

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URL Oficial: http://www.elsevier.com/wps/find/journaldescription.cws_home/622860/description#description



Resumen

Three members of the lead (II) n-alkanoates (from etanoate to n-butanoate) have been synthesized, purified and studied by d.s.c., Xray diffraction, and FTIR spectroscopy. Lead (II) acetate, propanoate, and butanoate present only a melting transition at T = (452.6, 398.2, and 346.5) K, with DfH = (16.0, 13.1, and 15.6) kJ Æ mol1, and DfS = (35.3, 32.8, and 45.1) J Æ mol1 Æ K1, respectively. These
temperature data correct to a great extent the historical values reported in the literature. These three members readily quench into a glass state. Their corresponding Tg values are (314.4, 289.0, and 274.9) K, respectively, measured by d.s.c. at a heating rate of 5 K Æ min-1.


Tipo de documento:Artículo
Palabras clave:Lead (II) short alkanoates; Glass; Ionic liquid; D.s.c.; FTIR; XRD
Materias:Ciencias > Geología > Cristalografía
Código ID:9962
Depositado:02 Feb 2010 15:44
Última Modificación:03 Sep 2010 08:11

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