IR matrix spectra of CsNO2, RbNO2, KNO2, and NaNO2. The structure of CsNO2 |
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| Institution: | 1. Canadian Centre for Research in Advanced Fluorine Technologies, University of Lethbridge, 4401 University Drive W, Lethbridge, AB, CA T1K 3M4, Canada;2. Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive W, Lethbridge, AB, CA T1K 3M4, Canada;1. Nucleus Millennium of Chemical Processes and Catalysis, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Casilla 306, Santiago, Chile;2. Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany;3. Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;4. Universidad Bernardo O Higgins, Departamento de Ciencias Químicas y Biológicas, Laboratorio de Bionanotecnología, General Gana 1702, Santiago, Chile;1. Università di Pisa, Dipartimento di Chimica e Chimica Industriale, Via Moruzzi 13, I-56124 Pisa, Italy;2. Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy;1. Department of Chemistry, Islamic Azad University, Boroujerd Branch, P. O. Box 518, Boroujerd 6915136111, Iran;2. Department of Chemistry, Islamic Azad University, Tonekabon Branch, P. O. Box 4684161167, Tonekabon, Iran;3. Nanotechnoloy & Catalysis Research Centre, NANOCAT, University Malaya, 50603 Kuala Lumpur, Malaysia |
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| Abstract: | The IR spectra of alkali nitrites were studied in Ar matrices at the temperature of 7 K. The spectra of CsNO2 were investigated with the aid of 15N and 18O isotopes in order to determine the structure of the gaseous molecules. The IR spectra of 18O-enriched CsNO2 samples were recorded and the results interpreted by means of normal coordinate calculations. CsNO2 has a planar ring structure of C2v, symmetry. The bond angle ONO of this molecule was calculated to be 116 ± 5°. NaNO2 as well as the remaining alkali nitrites have C2v, symmetry structures. Far-IR spectra of alkali nitries were recorded in order to measure the interionic stretching vibrations; in some case low-frequency bands were observed and assigned to the A1 and B1 interionic stretching modes. |
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