The electronic states correlated to the first dissociation channel, around 25500 cm^-1, of the AlC and GaC molecules have been investigated by CASSCF/MRCI methodology with aug-cc-pV5Z basis set. Our work focused on the accurate description of the potential energy curves, dissociation energies, transition moment functions, radiative lifetimes, dipole moments and molecular constants The B⁴∑^- electronic state has been previously detected for AlC molecule and it is probably not detectable in GaC molecule due to the predissociative character which affects all its vibrational levels. The characterization of the GaC low-lying electronic states were carried out for the first time.

中文翻译：

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AlC和GaC的低洼状态：分子常数，跃迁几率和辐射寿命

已经通过具有aug-cc-pV5Z基集的CASSCF / MRCI方法研究了与AlC和GaC分子的第一个解离通道（约25500 cm ^-1）相关的电子态。我们的工作主要集中在势能曲线，离解能，跃迁矩功能，辐射寿命，偶极矩和分子常数B的精确描述⁴ Σ ^-邦电子已经于ALC分子被先前检测，它可能无法检测到GAC中分子因其预解离特性而影响其所有振动水平。首次对GaC的低电子态进行了表征。