1. Isotope effects in the infrared spectra of the polar and nonpolar isomers of N2O dimer
- Author
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Ziad Abusara, Mahin Afshari, C. L. Van Eck, M. Dehghany, and Nasser Moazzen-Ahmadi
- Subjects
Quantitative Biology::Biomolecules ,Materials science ,Dimer ,Ab initio ,Infrared spectroscopy ,Atomic and Molecular Physics, and Optics ,Spectral line ,chemistry.chemical_compound ,Crystallography ,Monomer ,Nuclear magnetic resonance ,chemistry ,Kinetic isotope effect ,Physics::Atomic and Molecular Clusters ,Polar ,Physical and Theoretical Chemistry ,Spectroscopy - Abstract
The rotationally resolved spectra of 15 N 15 N 16 O dimer for the polar and nonpolar isomers are studied in the region of the N–N stretching fundamental of the monomer (∼2150 cm −1 ) using a rapid-scan tunable diode laser spectrometer to probe a pulsed supersonic jet expansion. These spectra are very similar to the corresponding spectra of the normal species, ( 14 N 14 N 16 O) 2 . Structural parameters and vibrational shifts obtained here are compared with those of the normal species and ab initio values. These results confirm that the nonpolar isomer has a centrosymmetric slipped-antiparallel structure while the polar isomer consists of two slipped and (approximately) parallel monomer units.
- Published
- 2008
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