@article {5200,
	title = {Orbital angular momentum (Renner-Teller) effects in the (2)Pi(i) ground state of silicon methylidyne (SiCH)},
	journal = {Journal of Chemical Physics},
	volume = {114},
	number = {2},
	year = {2001},
	note = {ISI Document Delivery No.: 388ZMTimes Cited: 19Cited Reference Count: 42},
	month = {Jan},
	pages = {725-734},
	type = {Article},
	abstract = {The ground state vibrational energy levels of jet-cooled SiCH and SiCD have been studied by a combination of laser-induced fluorescence and wavelength-resolved fluorescence techniques. The radicals were produced by a pulsed electric discharge at the exit of a supersonic expansion using tetramethylsilane or methyltrichlorosilane as the precursor. Emission spectra have been obtained by pumping both perpendicular and parallel (vibronically induced) bands, providing complementary information on the Si-C stretching and Si-C-H bending modes. Ground state energy levels up to 4000 cm(-1) have been assigned and fitted using a vibrational Hamiltonian that incorporates Renner-Teller, spin-orbit, vibrational anharmonicity, and Fermi resonance interactions. The validity of the derived parameters has been tested using the isotope relations. (C) 2001 American Institute of Physics.},
	keywords = {ELECTRONIC-SPECTRUM, FERMI-RESONANCE INTERACTIONS, GAS-PHASE, MOLECULAR-STRUCTURE, MONOFLUOROSILYLENE, PYROLYSIS JET SPECTROSCOPY, SIMPLEST UNSATURATED SILYLENE, spin-orbit, TRIATOMIC-MOLECULES, VIBRATIONAL FREQUENCIES},
	isbn = {0021-9606},
	url = {<Go to ISI>://000166213000011},
	author = {Smith, T. C. and Li, H. Y. and Hostutler, D. A. and Clouthier, D. J. and Merer, A. J.}
}
@article {2996,
	title = {SUB-DOPPLER SPECTROSCOPY OF THIOFORMALDEHYDE - EXCITED-STATE PERTURBATIONS AND EVIDENCE FOR ROTATION-INDUCED VIBRATIONAL MIXING IN THE GROUND-STATE},
	journal = {Journal of Chemical Physics},
	volume = {101},
	number = {9},
	year = {1994},
	note = {ISI Document Delivery No.: PP519Times Cited: 9Cited Reference Count: 50},
	month = {Nov},
	pages = {7300-7310},
	type = {Article},
	abstract = {High-resolution intracavity dye laser spectroscopy has been used to obtain sub-Doppler spectra of transitions to 350 rotational levels in the 4(0)(1) band of the ($) over tilde A (1)A(2)-($) over tilde X (1)A(1) electronic transition of thioformaldehyde. Ground state combination differences from the sub-Doppler spectra, combined with microwave and infrared data, have been used to improve the ground state rotational and centrifugal distortion constants of H2CS. The upper state shows a remarkable number of perturbations. The largest of these are caused by nearby triplet levels, with matrix elements of 0.05-0.15 cm(-1). A particularly clear singlet-triplet avoided crossing in K-a{\textquoteright} = 7 has been shown to be caused by interaction with the F-1 component of the 3(1)6(2) vibrational level of the ($) over tilde a (3)A(2) state. At least 53\% of the S-1 levels show evidence of very small perturbations by high rovibronic levels of the ground state. The number of such perturbations is small at low J, but increases rapidly beyond J=5 such that 40\%-80\% of the observed S-1 levels of any given J are perturbed by ground state levels. Model calculations show that the density and J dependence of the number of perturbed levels can be explained if there is extensive rotation-induced mixing of the vibrational levels in the ground state.},
	keywords = {ANTICROSSING SPECTROSCOPY, HIGH ROVIBRONIC LEVELS, HIGH-RESOLUTION, LASER, LEVEL, OPTICAL DOUBLE-RESONANCE, POLYATOMIC-MOLECULES, POTENTIAL-ENERGY, PYROLYSIS JET SPECTROSCOPY, QUANTUM BEAT SPECTROSCOPY, SINGLET-TRIPLET PERTURBATIONS, SPECTROSCOPY, SURFACES},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1994PP51900012},
	author = {Clouthier, D. J. and Huang, G. and Adam, A. G. and Merer, A. J.}
}
