Isotope effects in the infrared spectra of the polar and nonpolar isomers of N2O dimer

被引：76

作者：

Dehghany, M. ^{[1
]}

Afshari, Mahin ^{[1
]}

Abusara, Z. ^{[1
]}

Van Eck, C. ^{[1
]}

Moazzen-Ahmadi, N. ^{[1
]}

机构：

[1] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada

来源：

JOURNAL OF MOLECULAR SPECTROSCOPY | 2008年 / 247卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

N2O dimer; Ro-vibrational spectrum; clusters; laser spectroscopy; pulsed supersonic jet; isotope effects;

D O I：

10.1016/j.jms.2007.11.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The rotationally resolved spectra of (NN)-N-15-N-15 O-16 dimer for the polar and nonpolar isomers are studied in the region of the N-N stretching fundamental of the monomer (similar to 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, ((NNO)-N-14-N-14-O-16)(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. (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：123 / 127

页数：5

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