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arXiv · 1506.08720

Electronic spectra of linear HC$_5$H and cumulene carbene H$_2$C$_5$

M. Steglich·J. Fulara·S. Maity·A. Nagy·J. P. Maier
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Abstract

The $1 ^3\Sigma_u^- \leftarrow X^3\Sigma_g^-$ transition of linear HC$_5$H (A) has been observed in a neon matrix and gas phase. The assignment is based on mass-selective experiments, extrapolation of previous results of the longer HC$_{2n+1}$H homologues, and density functional and multi-state CASPT2 theoretical methods. Another band system starting at 303 nm in neon is assigned as the $1 ^1 A_1 \leftarrow X ^1 A_1$ transition of the cumulene carbene pentatetraenylidene H$_2$C$_5$ (B).

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M. Steglich, J. Fulara, S. Maity, A. Nagy, J. P. Maier. 2015-06-29. Electronic spectra of linear HC$_5$H and cumulene carbene H$_2$C$_5$. https://doi.org/10.1063/1.4922920

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