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Title: Detection and characterization of singly deuterated silylene, SiHD, via optical spectroscopy

Singly deuterated silylene has been detected and characterized in the gas-phase using high-resolution, two-dimensional, optical spectroscopy. Rotationally resolved lines in the 0001A'→A˜1A" 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 SiH2 and SiD2 to determine an improved equilibrium bond length, rSiH, 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˜1A'(0,0,0) and A˜1A"(0,0,0) state respectively. The dispersed fluorescence consists of a long progression in the A˜1A"(0,0,0)→X˜1A'(0,ν2,0) emission which was analyzed to produce vibrational parameters. Furthermore, a strong quantum level dependence of the rotationally resolved radiative decay curves is analyzed.
;  [1] ;  [2] ;  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)
  2. Arizona State Univ., Tempe, AZ (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 0021-9606; R&D Project: CO006; KC0301020
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 144; Journal Issue: 24; Journal ID: ISSN 0021-9606
American Institute of Physics (AIP)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; fluorescence spectra; laser induced fluorescence; emission spectra; excited states; spectrum analysis
OSTI Identifier: