title: Gas chromatographic study of the hydrogen bonding of aliphatic alcohols to tri-n-octylphosphine oxide.
abstract: Retention volumes of 21 aliphatic alcohols were measured at five temperatures between 30 and 60 degrees 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 dm3 mol(-1) at 45 degrees 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).
authors.affiliation: División de Química Analítica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina. rcastell@dalton.quimica.unlp.edu.ar
authors.forename: R C
authors.initials: RC
authors.lastname: Castells
authors.forename: L M
authors.initials: LM
authors.lastname: Romero
authors.forename: A M
authors.initials: AM
authors.lastname: Nardillo
mesh_terms: D000438:Alcohols / Q000737:chemistry*; D002849:Chromatography, Gas / Q000379:methods*; D006860:Hydrogen Bonding; D009943:Organophosphorus Compounds / Q000737:chemistry*
chemical_list: D000438:Alcohols; D009943:Organophosphorus Compounds; C044965:trioctyl phosphine oxide