THE SIMPLEST HETERONUCLEAR METAL CLUSTER - LIBE

An electronic transition with an origin near 19203 cm-1 is observed in vapour produced by YAG laser vaporization of a pressed pellet of Li and Be powders and assigned to LiBe diatomic. Vibrational analysis yields a G 1 2″=295 cm-1 and G 1 2′=188 cm-1. A preliminary rotational analysis gives r0″=2.59 Å and r0′=3.04 Å. The spectroscopy and the electronic structure are discussed and the experimental molecular constants show a very good agreement with our recent state of the art ab initio calculated values. © 1990.