A−E splitted transitions observed in the jet-cooled spectrum of methoxyacetaldehyde and the spectroscopic parameters obtained from their analysis.
|J′||K′a||K′c||J″||K″a||K″c||νobsa MHz||uνobsb MHz||νobs−νcalcc MHz||νobs MHz||uνobs MHz||νobs−νcalc MHz|
Moment of inertia of the methyl top Ia = 3.173 uÅ2 and angles between the internal rotation axis i and the principal axis ∠(i, a) = 28.19°, ∠(i, b) = 61.81°, ∠(i, c) = 90° were obtained from the ab initio calculations and were kept fixed during the fitting procedure.
The numbers in parentheses are 1σ uncertainties (67% confidence level) in units of the last decimal digit.
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