VACUUM ULTRAVIOLET PHOTOLYSIS OF (CH3)NGECL4-N (N=0-2) MOLECULE - OBSERVATION OF THE GECL2(B-APPROXIMATELY,A-APPROXIMATELY-]X-APPROXIMATELY) TRANSITIONS

Methyl germanium chlorides (CH3)nGeCl4-n (n = 0-2), were photolyzed at H Lyman-α (121.6 nm) and Ar I (104.8 and 106.7 nm) resonance lines. Two broad emission bands were observed in the 310-370 and 390-560 nm regions. The former band is tentatively attributed to emission from the singlet B̃ state of the GeCl2 radical. The latter fluorescence is assigned as the GeCl2 (à 1B1 → X̃ 1A1) transition. The fluorescence lifetimes are 89.7 ± 6.8 ns and 17.4 ± 0.6 μs for the B̃ and à excited states, respectively. © 1990.