title: Characterization of silicon-carbon clusters by infrared laser spectroscopy.  The nu 1 band of SiC4.
abstract: The nu 1 fundamental vibration of linear SiC4 has been observed by infrared diode laser spectroscopy of a supersonic cluster beam. Twenty-four rovibrational transitions were measured in the spectral region of 2094.6 to 2097.1 cm-1, the rotational temperature was 10 K. A combined least-squares fit of these transitions with previously reported microwave data yielded the following molecular constants: nu 1 = 2095.45806(37) cm-1, B" = 0.051161131(52) cm-1, and B' = 0.0509157(96) cm-1. These results are compared to vibrational spectroscopy measurements of SiC4 trapped in a solid Ar matrix and to ab initio calculations.
authors.affiliation: Department of Chemistry, University of California, Berkeley 94720, USA.
authors.forename: A
authors.initials: A
authors.lastname: Van Orden
authors.forename: R A
authors.initials: RA
authors.lastname: Provencal
authors.forename: T F
authors.initials: TF
authors.lastname: Giesen
authors.forename: R J
authors.initials: RJ
authors.lastname: Saykally
mesh_terms: D001128:Argon; D001256:Astronomy / Q000379:methods; D002244:Carbon / Q000737:chemistry*; D017554:Carbon Compounds, Inorganic; D002623:Chemistry Techniques, Analytical / Q000379:methods; D019443:Cosmic Dust / Q000032:analysis*; D007834:Lasers; D017655:Silicon Compounds / Q000737:chemistry*; D013055:Spectrophotometry, Infrared / Q000379:methods*
chemical_list: D017554:Carbon Compounds, Inorganic; D019443:Cosmic Dust; D017655:Silicon Compounds; D001128:Argon; D002244:Carbon; C022088:silicon carbide