Frontispiece: The Hydrogen Bond and Beyond: Perspectives for Rotational Investigations of Non‐Covalent Interactions

Molecular Aggregation The forest of non‐covalent interactions, dominated by the centenary hydrogen bond (HB), has more trees than expected. In the Minireview on page 11402 ff., Lesarri and co‐workers outline the role played by supersonic‐jet rotational spectroscopy to discern self‐aggregation, molecular recognition, and recently evidenced interactions like the halogen (XB), chalcogen (CB), pnicogen (NB), or tetrel (TB) bonds. The empirical data obtained in the gas phase are highly complementary to theoretical predictions and condensed‐phase observations, contributing to our understanding of intermolecular interactions.