title: High resolution infrared spectroscopy of the asymmetric C-H stretch of 1,2,4,5-tetracyanobenzene (TCNB) and (TCNB)(2) in superfluid helium nanodroplets.
abstract: We report the observation of the C-H stretch vibration of 1,2,4,5-tetracyanobenzene (TCNB) and (TCNB)(2) embedded in superfluid helium droplets. The asymmetric C-H stretch of TCNB was observed at 3053.488(3) cm(-1). The corresponding band of the (TCNB)(2) is slightly blueshifted and was observed at 3054.651(2) cm(-1). The intensity of the IR band is increased compared to the monomer absorption. Based on a comparison of our experimental results with predicted IR bands, we conclude that (TCNB)(2) is formed in a C(2h) structure in the droplet.
authors.affiliation: Department of Physical Chemistry II, Ruhr-University Bochum, 44780 Bochum, Germany.
authors.forename: Anna
authors.initials: A
authors.lastname: Gutberlet
authors.forename: Ozgür
authors.initials: O
authors.lastname: Birer
authors.forename: Torsten
authors.initials: T
authors.lastname: Poerschke
authors.forename: Martina
authors.initials: M
authors.lastname: Havenith