First spectroscopic studies of the B2Sigma+ --> X2Sigma+ system in the 12C17O+ molecule spectrum

The emission spectrum of the B2Sigma+ --> X2Sigma+ system in the 12C17O+ has been recorded at high resolution with conventional spectroscopic techniques. A graphite hollow cathode lamp filled with oxygen, enriched approximately 45% with the 17O2 isotope, has given strong spectra of hitherto unreported bands system of 12C17O+. Four bands, which form the 0-v(') (v(')=1 -4) progression, have been rotationally analysed with effective Hamiltonians of Brown J. Mol. Spectrosc. 74 (1979) 294]. Next the rovibronic structure parameters, for the B2Sigma+ and X2Sigma+ states, have been determined from merge calculations. Finally, principal equilibrium molecular constants for the ground state: omegae=2186.032(26) cm(-1), omegae xe=14.7848(43) cm(-1), Be=1.927271(73) cm(-1) , alphae=1.8432(24) x 10(-2) cm(-1), De=6.018(26) x 10(-6) cm(-1), betae=1.11(92) x 10(-8) cm(-1) and the sigma(e)(B-->X)=45876.563(34) cm(-1) value of the 12CO17+ molecule have been derived for the first time in this investigation.