Abstract
The pure rotational spectra of the X 2Σ + ground states of the SrOH and SrOD radicals have been observed in the laboratory using millimeter/submillimeter direct absorption spectroscopy. The lesser abundant isotopically substituted species, 86SrOH, has been observed as well. The molecules were produced in a Broida-type oven by the reaction of Sr metal vapor with either H 2O 2 or D 2O 2. The rotational and spin—rotation constants were determined for the radicals from a nonlinear least-squares fit to the data using a 2Σ Hamiltonian. The millimeter-wave measurements support the picture that strontium hydroxide is linear in its ground electronic and vibrational state.
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