1. National Synchrotron Research Facility We conducted 4 Measuring Campaigns: May 2011, 2012, 2013, and 2014 CLS

2. Inside the hutch of the CLS far-infrared beam line, showing the Bruker IFS125-HR Fourier transfom spectrometer, the beam line transfer optics, and the 2 m White absorption cell.

3. 1 2 3 4 5 Welcome to the world where vibration and rotation can not be separated and the eigenfunctions can not be factored: Dynamics of large amplitude motion Quantum monodromy in a Champagne bottle potential function

4. Quantum lattice of the effective rotational constants B eff for NCNCS Experimental Data are connected by solid lines. Circles are GSRB values Two-dimensional energy-momentum lattice for NCNCS representing GSRB bending-rotation term values E(v b,K a ) plotted for J = K a B eff a ) E(v b,K a ) K a

6. NCNCS a-type transitions NCNCS b-type transitions

8. GSRB Hamiltonian predictions Hg arc background, 72 m, 270.55 K, Si bolometer, 77 Scans averaged May 2014 NCNCS, 223 mTorr, 270.65 K, 129 scans averaged, 0.01 cm -1, No ro-vibrational b-types Ro-vibrational a-types Rotational b-types

10. Ratio of signal-to-noise achieved using the synchrotron as a source over that achieved using a Hg lamp in the 35 to 350 cm -1. Nominal resolution: 0.00096 cm -1 Overall collection time for both data sets was equal. The assignment of the lowest wavenumber sub-band is confirmed via combination difference matches between observed and calculated data given in Table III

11. Weak but observed

12. Hybrid band system v 3 of NCNCS recorded in high resolution

13. Synchrotron advantage

15. Our experimental investigation of the effects of quantum monodromy on the spectrum of NCNCS is complete: All fundamental bend systems except v 4 at 662 cm -1 have been observed in high resolution at the far-infrared beamline at the Canadian Light Source Weak but observed

17. Loomis-Wood diagram for v 7 of NCNCS