Characterization of electronic spectra of rhodium monohydride and monodeuteride

The electronic spectra of rhodium monohydride and monodeuteride, obtained using a molecular beam laser vaporization source, have been investigated from 400 to 500 nm, by laser excitation and dispersed fluorescence spectroscopies. The ground level of RhH is (3)Delta(3) with omega(e) approximate to 2040 cm(-1) and omega(e)x(e) approximate to 46 cm(-1). The corresponding RhD data are omega(e) approximate to 1422 cm(-1) and omega(e)x(e) approximate to 18 cm(-1). The estimated ground state bond length is r(0) = 0. 159 nm. Excited states with Omega = 2, 3, and 4 have been observed. (C) 2000 Academic Press.