2023
DOI: 10.1021/acs.jpclett.3c02517
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Microhydration of Tertiary Amines: Robust Resonances in Red-Shifted Water

Eaindra Lwin,
Taija L. Fischer,
Martin A. Suhm

Abstract: Tertiary amines are strong hydrogen bond acceptors. When a water molecule donates one of the OH groups, its in-phase stretching vibration wavenumber is decreased to such an extent that it comes close to the water bending overtone. This gives rise to anharmonic phenomena such as classical Fermi resonance, resonance with multiple-quantum dark states, or combination transitions with low-frequency intermolecular modes. These effects, which contribute to the spectral breadth of room-temperature hydrogen-bonded amin… Show more

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