title: Observation of vibronically excited thioformaldehyde at 62,000-72,000cm(-1) by 1+1'+1' resonance enhanced multiphoton ionization spectroscopy.
abstract: Vibronically excited thioformaldehyde (H(2)CS) has been studied by two-color 1+1'+1' resonance enhanced multiphoton ionization (REMPI) spectroscopy, in which the C (1)B(2)0(0)(0) state of H(2)CS was selected as an intermediate state for the resonant excitation to high-lying electronic states at 62,000-72,000cm(-1). In light of the distinctive selection rules for the 1+1'+1' REMPI and one-photon direct absorption transitions excited from the C (1)B(2) and X (1)A(1) states of H(2)CS, respectively, we have been able to identify 1 valence state (npi, pi*(2)), and 14 Rydberg states (n, 5s), (pi, 4s), (n, 3d(xz)), (n, 3d(yz)), (n, 5p(z)), (n, 5p(x)), (n, 5p(y)), n,4d(z)2), (n, 4d(xz)), (n, 4d(yz)), (n, 6s), (pi, 4p(y)), (n, 6p(z)), and (n, 6p(y)), in this study.
authors: Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
authors: Hsing-Chen
authors: HC
authors: Wu
authors: Chun-Cing
authors: CC
authors: Chen
authors: Yit-Tsong
authors: YT
authors: Chen
mesh_terms: D004583:Electrons; D005557:Formaldehyde / Q000031:analogs & derivatives* / Q000737:chemistry*; D017785:Photons; D013057:Spectrum Analysis / Q000379:methods*; D014732:Vibration
chemical_list: C527773:thioformaldehyde; D005557:Formaldehyde