Spectroscopy of high vibrational levels of the N-N stretching mode of N-N- sup 16 O and N-N- sup 18 O

The fundamental and overtones up to {nu} = 6 of the {nu}{sub 3} mode of N{sub 2}{sup 16}O and N{sub 2}{sup 18}O have been studied. The positions of the {nu}{sub 3} overtones can be fit by a two-parameter model since there is very limited interaction with other molecular vibrations. Vibrational self-...

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Bibliographic Details
Published in:Journal of physical chemistry (1952) 1989-03, Vol.93:6
Main Authors: Yamasaki, N.L.S., Manzanares I., C., Baylor, L.C., Schatz, G.C., Weitz, E.
Format: Article
Language:English
Subjects:
400201 - Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
CHALCOGENIDES
CONFIGURATION INTERACTION
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
FLUIDS
FOURIER TRANSFORM SPECTROMETERS
GASES
INFRARED SPECTRA
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
ISOTOPES
LIGHT NUCLEI
MEASURING INSTRUMENTS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NORMAL-MODE ANALYSIS
NUCLEI
OXIDES
OXYGEN 16
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
ROTATIONAL STATES
SELF-CONSISTENT FIELD
SPECTRA
SPECTROMETERS
SPECTROSCOPY
STABLE ISOTOPES
VIBRATIONAL STATES
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Summary:The fundamental and overtones up to {nu} = 6 of the {nu}{sub 3} mode of N{sub 2}{sup 16}O and N{sub 2}{sup 18}O have been studied. The positions of the {nu}{sub 3} overtones can be fit by a two-parameter model since there is very limited interaction with other molecular vibrations. Vibrational self-consistent field and configuration interaction calculations and isotopic shift data show that the N-N stretching overtone is best described as a normal mode. Both N{sub 2}{sup 16}O and N{sub 2}{sup 18}O display line widths for the R branch of the {nu} = 6 overtone of less than 2 cm{sup {minus}1}.
ISSN:0022-3654
1541-5740
DOI:10.1021/j100343a007