Isothermal retention indices on poly(3-cyanopropylmethylsiloxane) stationary phases.
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.
Tello
Ana María
AM
Department of Structure and Molecular Dynamics, Institute of Physical Chemistry Rocasolano, Serrano 119, 28006 Madrid, Spain.
Lebrón-Aguilar
Rosa
R
Quintanilla-López
Jesús Eduardo
JE
Santiuste
José María
JM
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
D009570:Nitriles; D009930:Organic Chemicals; D012833:Siloxanes; C513730:poly(methylcyanopropylsiloxane)