# THE ELECTRONIC SPECTRA OF LaNH AND LaND

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 Title: THE ELECTRONIC SPECTRA OF LaNH AND LaND Creators: Clouthier, Dennis J.; Merer, A. J.; Rixon, Scott J.; Varberg, Thomas D. Issue Date: 2000 Publisher: Ohio State University Abstract: Electronic bands of the new molecules LaNH and LaND have been observed by laser-induced fluorescence following the reaction of laser-ablated La metal with $NH_{3}$ or $ND_{3}$ under supersonic jet-cooled conditions. High-resolution data for LaNH show that the ground state is $^{2}\Sigma^{+} (b_{\hat{g}s})$ with $B_{0} = 0.305478 (22) cm^{-1}$. Extensive dispersed fluorescence data have given ground state vibrational frequencies for LaNH (LaND): $\nu_{2} (bend) = 462 (354) cm^{-1}$ and $\nu_{3} (La-N stretch) = 755 (744) cm^{-1}$. Two electronic systems with origins near 658 and 823 nm, both of which appear to have $^{2}\Pi$ upper states, have been identified from spectra in the 525 -- 875 nm region. Description: Author Institution: Department of Chemistry, University of Kentucky; Department of Chemistry, University of British Columbia; Department of Physics and Astronomy, University of British Columbia; Department of Chemistry, Macalester College URI: http://hdl.handle.net/1811/19716 Other Identifiers: 2000-RA-06