Front Cover: Does the Intra‐Atomic Deformation Energy of Interacting Quantum Atoms Represent Steric Energy? (ChemistryOpen 5/2019)

Abstract

The Front Cover shows the quantum topological atoms in a configuration of the complex HF⋅⋅⋅OH2, where F is green and O is red. The background is the gradient vector field of the electron density in the plane of the complex. This work shows that the intra‐atomic energy (Eintra) of the interacting quantum atoms (IQA) approach, mainly the kinetic energy contribution, quantifies steric repulsion. This assertion is confirmed by numerous successful fits to the classical Buckingham potential, Aexp(‐Br), for a wide variety of orientations in atom⋅⋅⋅atom contact. If hardness is associated with B's value, then F is harder than O. Thus, F is like marble while O is like a football, as shown the picture. More information can be found in the Full Paper by B. C. B. Symons et al. on page 560 in Issue 5, 2019 (DOI: 10.1002/open.201800275).