The ground state infrared spectra of several isotopic forms of the CdH and ZnH radicals

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.458484· OSTI ID:7243913

Urban, R; Magg, U; Birk, H; Jones, H ^[1]

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1. Abteilung Physikalische Chemie, Universitaet Ulm D-7900 Ulm, Federal Republic of Germany (DE)

The infrared spectra of six isotopic forms of cadmium monohydride, ({sup 116}CdH (7.6%), {sup 114}CdH (28.9%), {sup 113}CdH (12.3%), {sup 112}CdH (24.1%), {sup 111}CdH (12.7%), and {sup 110}CdH (12.4%)) and four isotopic forms of zinc hydride ({sup 68}ZnH (18.6%), {sup 67}ZnH (4.1%), {sup 66}ZnH (27.8%), and {sup 64}ZnH (48.9%)) have been observed in natural abundance in their ground electronic state ({sup 2}{Sigma}{sup +}) in the gas phase using a diode laser spectrometer. A number of transitions of {sup 108}CdH (0.9%) and {sup 106}CdH (1.2%) and {sup 70}ZnH (0.6%) were also observed, but too little data was accumulated to allow a good analysis. The hydrides were produced by reaction of hydrogen with metal vapor at elevated temperature in an electric discharge. The analysis of the experimental data was carried out in two ways. (a) A complete set of Dunham parameters and spin--rotation parameters ({gamma} parameters) was determined for each isotopic species of the two radicals and (b) a set of mass-independent parameters were calculated for both ZnH and CdH. Since only information over the isotopic species of the heavy atom was produced in each case, effects arising from a breakdown of the Born--Oppenheimer approximation were negligible. The effects of the strong anharmonicity present in these two molecules on the values of the parameters are discussed.

• OSTI ID: 7243913
• Journal Information: Journal of Chemical Physics; (USA), Vol. 92:1; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CADMIUM 106
ISOTOPE EFFECTS
CADMIUM 108
CADMIUM 110
CADMIUM 111
CADMIUM 112
CADMIUM 113
CADMIUM 114
CADMIUM 116
CADMIUM COMPOUNDS
INFRARED SPECTRA
ZINC 64
ZINC 66
ZINC 67
ZINC 68
ZINC 70
ZINC HYDRIDES
GASES
HYDRIDES
SPECTRAL SHIFT
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CADMIUM ISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FLUIDS
HYDROGEN COMPOUNDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEI
RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES
ZINC COMPOUNDS
ZINC ISOTOPES
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory