In Search of Vibrationally Excited State Monodromy in NCNCS

Abstract

At previous ISMS meetings we have reported on the effects of monodromy on the ν 7 bending mode of NCNCS. The presence of monodromy was established directly from experimental data collected at the Canadian Light Source. To aid that work we assigned some of the spectrum of the ν 7 manifold built on the ν 3 stretching mode. In this talk we will discuss a more complete assignment of the ν 3 +ν 7 spectrum. One of our goals is to consider the impact of stretching on the monodromy of the ν 7 mode. We will attempt to use the same Generalized SemiRigid Bender model as was applied to the pure ν 7 mode.

Quantum monodromy in NCNCS – direct experimental confirmation

“…We already have evidence that quantum monodromy with respect to the same ν 7 mode as considered here, also exists in this excited small-amplitude vibrational state. 49 If we confirm this it could be the first example of excited-state quantum monodromy.…”

“…This similarity suggests that the n b levels built on the u 3 = 1 state may experience monodromy similar to that of the pure n b system being worked on here. 49 We will explore this in a future paper. 50 Despite the resemblance of the central portions of the n 7 and n 3 bands there is an important difference.…”

“…This similarity suggests that the ν b levels built on the υ 3 = 1 state may experience monodromy similar to that of the pure ν b system being worked on here. 49 We will explore this in a future paper. 50…”