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The permanent electric dipole moments for the X 5Π and B 5Π states of gas-phase chromium monoxide, CrO, have been experimentally determined using the sub-Doppler optical technique of intermodulated fluorescence spectroscopy in conjunction with the Stark effect. The measured values are 3.88±0.13 and 4.1±1.8 D for the X 5Π and B 5Π states, respectively. The theoretical values determined for the X 5Π state, using multireference configuration interaction iterative-natural-orbital and finite-field calculations, are in excellent agreement with the experimental value.
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Steimle et al. (1989) studied this question.
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