15min:
THE nu2 BENDING VIBRATIONAL STRUCTURE OF THE X 2 Sigma+ STATE OF MgNC.

MASARU FUKUSHIMA AND TAKASHI ISHIWATA, Faculty of Information Sciences, Hiroshima City University, Asa-Minami, Hiroshima 731-3194, Japan.

We have generated MgNC in supersonic free jet expansions, and observed the laser induced fluorescence (~LIF~) of the A 2 Pi -- X 2 Sigma+ transition. We measured the LIF dispersed fluorescence spectra from the single vibronic levels (~SVL~) on the Mg-N-C bending (~ nu2~) mode in the upper A 2 Pi state. On the basis of the vibronic structures in the SVL dispersed spectra, we discuss the vibrational structure of the ground X 2 Sigma+ state of MgNC and the potential surface of the isomerization reaction, MgNC leftrightarrow MgCN.