THE LOW-LYING ELECTRONIC STATES OF LIC

The spectroscopic constants for the doublet and quartet states of LiC below about 30000 cm(-1) are determined using an internally contracted multireference configuration-interaction approach in conjunction with a [6s5p3d2f] atomic natural orbital basis sets. All of the strongly b ound states, X(4) Sigma(-), (1)(2) Delta, (1)(2) Sigma(+), and (2)(2) Pi, are very ionic in character. The only bound-bound quartet transiti on in this energy range is (2)(4) Sigma(-) - X(4) Sigma(-) and Franck- Condon factors, Einstein A values, and lifetimes are reported for this transition.