Gas chromatographic study of the hydrogen bonding of aliphatic alcohols to tri- n-octylphosphine oxide

Retention volumes of 21 aliphatic alcohols were measured at five temperatures between 30 and 60°C in columns packed with different percentages of squalane or with solutions of tri- n-octylphosphine oxide (TOPO) in squalane coated on previously deactivated Chromosorb W. Experimental data fit to a 1:1...

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Bibliographic Details
Published in:Journal of Chromatography A 2000-11, Vol.898 (1), p.103-109
Main Authors: Castells, Reynaldo César, Mónica Romero, Lilian, Miguel Nardillo, Angel
Format: Article
Language:English
Subjects:
Alcohols
Alcohols - chemistry
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Chromatography, Gas - methods
Exact sciences and technology
Gas chromatographic methods
Hydrogen Bonding
Organophosphorus Compounds - chemistry
Trioctylphosphine oxide
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Summary:Retention volumes of 21 aliphatic alcohols were measured at five temperatures between 30 and 60°C in columns packed with different percentages of squalane or with solutions of tri- n-octylphosphine oxide (TOPO) in squalane coated on previously deactivated Chromosorb W. Experimental data fit to a 1:1 alcohol–TOPO association model, with association constants ranging from 26 to 59 dm 3 mol −1 at 45°C. Association constants follow the trend primary alcohols>secondary alcohols>tertiary alcohols, with minor differences between the members of each of these three groups. The association enthalpy for the 21 alcohols averages −21.8 kJ mol −1, with a standard deviation of −1.3 kJ mol −1
ISSN:0021-9673
DOI:10.1016/S0021-9673(00)00802-5