Chromatomass spectrometric study of mixtures of aliphatic diols using column silylation

A chromatomass spectrometric method of studying C4-C10 aliphatic diols in complex mixtures using silylation directly in the chromatographic column with N,O-bis (trimethylsilyl) trifluoroacetamide was developed. © 1984 Plenum Publishing Corporation

Chromatomass spectrometric study of mixtures of aliphatic diols using column silylation

A chromatomass spectrometric method of studying C4-C10 aliphatic diols in complex mixtures using silylation directly in the chromatographic column with N,O-bis (trimethylsilyl) trifluoroacetamide was developed. © 1984 Plenum Publishing Corporation

Structures of products from positive ion-molecule reactions by means of vibrational spectroscopy

Examples of various approaches to determining gaseous ion structures are described. Two cases are presented in which infrared multiple photon dissociation (IRMPD) spectroscopy provides characteristic information. Comparison with DFT-calculated normal modes differentiates isomers. The IRMPD spectrum of the even-electron C8D8F+ product ion from the ion-molecule reaction of CF3+ with perdeuterated acetophenone exhibits a degree of resolution sufficient to identify C6D5CFCD3+ and rule out ring-fluorinated isomers. The dimerization of phenylacetylene with its molecular ion has been explored, with the conclusion that a mixture of product ions is formed. The best match to the experimental spectrum is achieved by superimposing the bands calculated for ionized 1-phenylazulene and ionized 1,2-diphenylcyclobutadiene