Gas-phase infrared spectroscopy of the rubicene cation (C26H14•+) - A case study for interstellar pentagonsJ. Bouwman, C. Boersma, M. Bulak, J. Kamer, P. Castellanos, A. G. G. M. Tielens and H. LinnartzA&A, 636 (2020) A57DOI: https://doi.org/10.1051/0004-6361/201937013