Comparison of physicochemical properties of new ionic liquids based on imidazolium, quaternary ammonium, and guanidinium cations.

Comparison of physicochemical properties of new ionic liquids based on imidazolium, quaternary ammonium, and guanidinium cations. Research Abstract Details 

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Comparison of physicochemical properties of new ionic liquids based on imidazolium, quaternary ammonium, and guanidinium cations. Abstract Text:

Prashant S Kulkarni, Branco, Crespo,M Cristiana Nunes,Anabela Raymundo,Carlos A M Afonso,Prashant S Kulkarni, Branco, Crespo,M Cristiana Nunes,Anabela Raymundo,Carlos A M Afonso,Prashant S Kulkarni, Branco, Crespo,M Cristiana Nunes,Anabela Raymundo,Carlos A M Afonso,

More than 50 ionic liquids were prepared by using imidazolium, quaternary ammonium, and guanidinium cations and various anions. In these series, different cationic structures such as 1-benzyl-3-methylimidazolium [Bzmim]+, 1,3-dibenzylimidazolium [BzmiBz]+, 1-octyl-3-methylimidazolium [C8mim]+, 1-decyl-3-methylimidazolium [C10mim]+, tricapryl-methylammonium [Aliquat]+, benzyltriethylammonium [BzTEA]+, phenyltrimethylammonium [PhTMA]+, and dimethyldihexylguanidinium [DMG]+ were combined with anions, p-toluenesulfonate [TSA](-), dicyanoamide [DCA]-, saccharine (2-sulfobenzoic acid imide sodium salt) [SAC]-, trifluoroacetate [TFA]-, bis(trifluoromethanesulfonyl)imide [Tf2N]-, trifluoromethanesulfonate [TfO]-, and thiocyanate [SCN]-. Important physical data for these ionic liquids are collated, namely solubility in common solvents, viscosity, density, melting point and water content. Apart from the viscosity, the Newtonian and non-Newtonian behavior of these ionic liquids is also disclosed. Stability of these ionic liquids under thermal, basic, acidic, nucleophilic, and oxidative conditions was also studied. The features of the solid-liquid phase transition were analyzed, namely the glass transition temperature and the heat capacity jump associated with the transition from the non-equilibrium glass to the metastable supercooled liquid. A degradation temperature of each ionic liquid was also determined. Comparisons of the properties of various ionic liquids were made.

Comparison of physicochemical properties of new ionic liquids based on imidazolium, quaternary ammonium, and guanidinium cations. Publishing Authors By Initials

PS Kulkarni,LC Branco,JG Crespo,MC Nunes,A Raymundo,CA Afonso,PS Kulkarni,LC Branco,JG Crespo,MC Nunes,A Raymundo,CA Afonso,PS Kulkarni,LC Branco,JG Crespo,MC Nunes,A Raymundo,CA Afonso,

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Comparison of physicochemical properties of new ionic liquids based on imidazolium, quaternary ammonium, and guanidinium cations. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Chemistry (Weinheim an der Bergstrasse, Germany)

VOLUME: 13

Page Numbers: 8478-88

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ISSN: 0947-6539

DAY: 10

MONTH: 10

YEAR: 2007

Comparison of physicochemical properties of new ionic liquids based on imidazolium, quaternary ammonium, and guanidinium cations. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Comparison of physicochemical properties of new ionic liquids based on imidazolium, quaternary ammonium, and guanidinium cations.

AFFILIATION: REQUIMTE, Departamento de Química, FCT-UNL, 2829-516 Caparica, Portugal.

Country: Germany

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MEDLINETA: Chemistry

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