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IR-IR Conformation Specific Spectroscopy of Na+(Glucose) Adducts
Jonathan M Voss1, Steven J Kregel1, Kaitlyn C Fischer1
1Department of Chemistry, University of Wisconsin, 1101 University Ave., Madison, WI, 53706, USA.
Abstract:
We report an IR-IR double resonance study of the structural landscape present in the Na+(glucose) complex. Our experimental approach involves minimal modifications to a typical IR predissociation setup, and can be carried out via ion-dip or isomer-burning methods, providing additional flexibility to suit different experimental needs. In the current study, the single-laser IR predissociation spectrum of Na+(glucose), which clearly indicates contributions from multiple structures, was experimentally disentangled to reveal the presence of three α-conformers and five β-conformers. Comparisons with calculations show that these eight conformations correspond to the lowest energy gas-phase structures with distinctive Na+ coordination. Graphical Abstract ᅟ.
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