The ground and first few excited electronic states of FH2have been calculated by the MRDhyphen;CI method, in an effort to make predictions on the Rydberg spectrum of this molecule. The results show that the excited Rydberg states, up to the 4plevels (in the united atom notation), are bound and have minima at geometries similar to that of the cation FH+2except the first excited state, which is also found to be bound but with minimum energy at a considerably longer bond length. The most intense boundndash;bound transitions are predicted to occur from the 3d, 4p, and 4sstates to the first excited state 1thinsp;2B2(3p).
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