Review on Noncovalent Interactions

In the last decade, experiment and theory have expanded our vision of noncovalent interactions (NCIs), shifting the focus from the conventional hydrogen bond to new bridging interactions involving a variety of weak donor/acceptor partners. Whereas most experimental data originate from condensed phases, the introduction of broadband (chirped-pulse) microwave fast-passage techniques has revolutionized the field of rotational spectroscopy, offering unexplored avenues for high-resolution studies in the gas phase. We present an outlook of hot topics for rotational investigations on isolated intermolecular clusters generated in supersonic jet expansions.

The centenary Hydrogen Bond is accompanied by other bridging interactions, like the Halogen Bond (XB), the Chalcogen Bond (CB), the Pnicogen Bond (NB), the Tetrel Bond (TB) and others