title: Isothermal retention indices on poly(3-cyanopropylmethylsiloxane) stationary phases.
abstract: Experimental isothermal retention indices (I) at 348, 363, 378 and 393 K of 52 solutes of varied polarity on seven different poly(cyanopropylmethylsiloxane) stationary phases with cyanopropyl group percentages between 0% and 75% have been determined by a well-proven, accurate method. Some of these I values were obtained on new stationary phases with cyanopropyl percentages never used before. The influence of column temperature and polymer polarity on I was thoroughly investigated. Finally, retention models were developed relating I values to physicochemical and molecular properties by multiple linear regression. The best model of retention index prediction for the proposed cyanosilicones involves the Abraham's descriptors.
authors.affiliation: Department of Structure and Molecular Dynamics, Institute of Physical Chemistry Rocasolano, Serrano 119, 28006 Madrid, Spain.
authors.forename: Ana María
authors.initials: AM
authors.lastname: Tello
authors.forename: Rosa
authors.initials: R
authors.lastname: Lebrón-Aguilar
authors.forename: Jesús Eduardo
authors.initials: JE
authors.lastname: Quintanilla-López
authors.forename: José María
authors.initials: JM
authors.lastname: Santiuste
mesh_terms: D000327:Adsorption; D000465:Algorithms; D055598:Chemical Phenomena; D002849:Chromatography, Gas / Q000379:methods*; D016014:Linear Models; D008956:Models, Chemical; D009570:Nitriles / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry; D021281:Quantitative Structure-Activity Relationship; D012833:Siloxanes / Q000737:chemistry*; D013696:Temperature
chemical_list: D009570:Nitriles; D009930:Organic Chemicals; D012833:Siloxanes; C513730:poly(methylcyanopropylsiloxane)