Abstract
The laser-induced excitation spectrum of the A ˜ 2 Π – X ˜ 2 Σ + transition of SrCCH has been recorded at high resolution. A rotational analysis has been performed yielding rotational and fine structure parameters for the à state. In addition, a vibrational frequency for the Sr–C stretch ( ν 3) in the à 2Π state has been determined. Using the rotational constant of the à state, the Sr–C bond length was determined to be 2.43 Å, which is ∼0.03 Å shorter than in the ground state. A comparison of the Λ-doubling constant p, to those of the other alkaline-earth acetylides suggests that SrCCH and CaCCH appear to follow the pure precession model unlike MgCCH. Finally, a search for the B ˜ 2 Σ + – X ˜ 2 Σ + transition was negative, as with CaCCH, suggesting that the B ˜ state may be predissociative.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
