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- W2940409795 abstract "Abstract A rotationally resolved spectrum of a band of the A ∼ 2Σ+ − X ∼ 2Π electronic transition of the SiCCl free radical has been obtained for the first time. The radical was produced in an electric discharge jet using 1,1-dichlorosilacyclobutane vapor in high pressure argon as the precursor. The laser-induced fluorescence spectrum of the band system in the 610–550 nm region was recorded and the 2Π3/2 spin component of the 0–0 band was studied at high resolution. Rotational analysis gave the B values for the combining states and by fixing the CCl bond lengths at ab initio values we obtained r″ (Si C) = 1.692(1) A and r' (Si C) = 1.594(1) A. The bond lengths correspond to a silicon-carbon double bond in the ground state and an unusual Si C triple bond in the excited state. Single vibronic level emission spectra yielded the ground state bending and stretching energy levels up to energies near 5000 cm−1. These were satisfactorily fitted to a Renner-Teller model that included spin–orbit and vibrational anharmonicity effects." @default.
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- W2940409795 date "2019-05-01" @default.
- W2940409795 modified "2023-09-25" @default.
- W2940409795 title "The high-resolution LIF spectrum of the SiCCl free radical: Probing the silicon-carbon triple bond" @default.
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- W2940409795 doi "https://doi.org/10.1016/j.jms.2019.04.001" @default.
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