title: Periodic bond breaking and making in the electronic ground state on a sub-picosecond timescale: OH bending spectroscopy of malonaldehyde in the frequency domain at low temperature.
abstract: Proton tunneling between the two equivalent structures of malonaldehyde through a substantial barrier is accelerated by more than a factor of 3 to approximately 0.24 ps by OH-bend excitation in phase with suitable motions of the molecular backbone. This is derived from a combined FTIR and Raman spectroscopy study in supersonic jets and rare gas matrices and compared to previous theoretical predictions.
authors.affiliation: Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, 37077 Göttingen, Germany.
authors.forename: Nils O B
authors.initials: NO
authors.lastname: Lüttschwager
authors.forename: Tobias N
authors.initials: TN
authors.lastname: Wassermann
authors.forename: Stéphane
authors.initials: S
authors.lastname: Coussan
authors.forename: Martin A
authors.initials: MA
authors.lastname: Suhm