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Updated: Jul 5, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
Interactions of aromatic heterocycles with water: the driving force from free-jet rotational spectroscopy and model
Assimo Maris1, Sonia Melandri, Marta Miazzi
1Dipartimento di Chimica G. Ciamician, Università degli Studi di Bologna, via Selmi, 2 40126 Bologna, Italy.
Abstract:
The interaction of isolated aromatic nitrogen atoms with water is explored within free jets by using rotational spectroscopy. To the existing data on diazines, we add the case of the 1:1 complex of 1,3,5-triazine and water (where water donates a proton to one of the nitrogen heterocyclic atoms to form a planar adduct). An electrostatic model based on distributed multipoles accurately reproduces the structures of the four azine-water complexes and allows us to understand the forces that stabilize these structures. The applied intermolecular potential allows us to estimate the changes in the thermodynamic functions of the complexes-compared to the separated constituents-and evaluate the temperature at which the complexes are stable under standard conditions.
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