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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 109 (1998), S. 9300-9305 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Monoiodogermylene has been detected for the first time using pulsed discharge and laserinduced fluorescence techniques. HGeI and DGeI were produced by an electric discharge through argon seeded with H3GeI or D3GeI. Although the vibronic structure in the spectra was very limited, all three excited state vibrational frequencies have been obtained for both isotopomers. Analysis of the partially resolved rotational structure of the 000 bands gave the following approximate r0 structures, with the bond angles constrained to previous ab initio values: r0″(Ge–I)=2.525(10) Å, r0″(H–Ge)=1.593(15) Å, θ0″(HGeI)=93.5°, r0′(Ge–I)=2.515(10) Å, r0′(H–Ge)=1.618(15) Å, and θ0′(HGeI)=116.2°. The fluorescence lifetime of monoiodogermylene in the lowest rovibronic levels is 1.515±0.004 μs and shows significant variations on deuteration and with rotational and vibrational level. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 109 (1998), S. 7827-7834 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The A˜ 1A″–X˜ 1A′ spectra of jet-cooled HSiI and DSiI have been studied using the pulsed discharge technique, using H3SiI and D3SiI as precursors. The excited state vibrational frequencies have been determined and the literature value of ν1′ substantially revised. Although a reliable excited state equilibrium structure was unattainable, the rotational constants of the 000 bands gave the structural parameters r0″(Si–I)=2.463(1) Å, r0″(Si–H)=1.534(1) Å, θ0″(HSiI)=92.4(1)°, r0′(Si–I)=2.436(1) Å, r0′(Si–H)=1.515(5) Å, and θ0′(HSiI)=114.9(2)°. The radiative lifetime of the 000 band has been measured to be 1230±30 ns. Trends in the structural parameters, vibrational frequencies, and their changes on electronic excitation for the monohalosilylenes have been discussed. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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