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Lasers and Molecular Beams Applied to the Study of Clusters of Chiral Molecules
Author(s) -
GiardiniGuidoni Anna,
Piccirillo Susanna
Publication year - 1997
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.199700049
Subject(s) - chemistry , diastereomer , fragmentation (computing) , spectroscopy , ionization , molecule , mass spectrometry , analytical chemistry (journal) , stereochemistry , crystallography , organic chemistry , ion , physics , chromatography , quantum mechanics , computer science , operating system
Resonance‐enhanced two‐photon ionization time‐of‐flight spectroscopy has been applied in a supersonic beam to study R‐(+)‐1‐phenyl‐1‐propanol (P R ) and its diastereomeric clusters with R(–) and S(+) 2‐butanol (B R ; B S ) and with R(–) and S(+) 2‐butylamine (A R , A S ). This mass resolved spectroscopy allowed us to assign a few vibronic frequencies of P R and measure the spectral shift of the diastereomeric clusters P R B R , P R B S , P R A R , and P R A S . The different bathocromic shifts observed in the two pairs indicates the possibility for spectroscopically differentiating the aggregates. Moreover, very reproducible differences in the fragmentation patterns provide an additional tool for their discrimination.