Abstract
A supersonic molecular beam of scandium imide, ScNH, and deuterated imide, ScND, were produced using a laser ablation/reaction source and interrogated by laser induced fluorescence and dispersed fluorescence spectroscopy. The field free fine and magnetic hyperfine interactions and Stark effect in the (0,0) à 2Πr–X̃2Σ+ transition of ScNH (origin=15 023.033 cm−1) were analyzed. Ground state vibrational spacing for ScNH and ScND was measured. The determined permanent electric dipole moments are μ(à 2Π)=4.08(7)D and μ(X̃ 2Σ+)=2.28(15)D. Plausible molecular orbital descriptions are given for the à 2Πr and X̃ 2Σ+ states based upon the interpretation of the spectroscopic parameters and a comparison with other isovalent molecules is made.
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