Hydrogen bond motifs of aqueous ammonia and ammonium explored with soft-x-ray and vibrational spectroscopy and ab initio quantum chemical calculations

A joint experimental and theoretical study by scientists from the MBI, HZB-BESSYII, Stockholm University, the University of Zurich and Magnosco GmbH, shows how to grasp the hydrogen bonding effects on the vibrational and electronic structure of ammonia and ammonium ion in aqueous solution.

One sentence summary:
FT-IR and soft-x-ray spectroscopy provide two local probes to characterize hydrogen bonding properties of aqueous NH₃ and NH₄⁺ with which it can be shown that, despite a clear difference in the number of hydrogen bonds, an intimate relationship exists in the electronic structure of the two key amine compounds.

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