Publication Date:
2016-06-28
Description:
Singly deuterated silylene has been detected and characterized in the gas-phase using high-resolution, two-dimensional, optical spectroscopy. Rotationally resolved lines in the 0 0 0 X ̃ 1 A ′ → A ̃ 1 A ″ band are assigned to both c -type perpendicular transition and additional parallel, axis-switching induced bands. The extracted rotational constants were combined with those for SiH 2 and SiD 2 to determine an improved equilibrium bond length, r SiH , and bond angle, θ, of 1.5137 ± 0.0003 Å and 92.04° ± 0.05°, and 1.4853 ± 0.0005 Å and 122.48° ± 0.08° for the X ̃ 1 A ′ 0 , 0 , 0 and A ̃ 1 A ″ ( 0 , 0 , 0 ) state respectively. The dispersed fluorescence consists of a long progression in the A ̃ 1 A ″ ( 0 , 0 , 0 ) → X ̃ 1 A ′ ( 0 , ν 2 , 0 ) emission which was analyzed to produce vibrational parameters. A strong quantum level dependence of the rotationally resolved radiative decay curves is analyzed.
Print ISSN:
0021-9606
Electronic ISSN:
1089-7690
Topics:
Chemistry and Pharmacology
,
Physics
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