Comment on “Structure and spectroscopy of (HCN)n clusters: Cooperative and electronic delocalization effects in C–H⋯N hydrogen bonding” [J. Chem. Phys. 103, 333 (1995)]

King and Weinhold assert in J. Chem. Phys. 103, 333 (1995) that the description of the hydrogen bond in terms principally of electrostatic interactions is incapable of describing the cooperative properties of hydrogen-bonded systems. However, provided that induction is included in the electrostatic interactions, the cooperative energy and dipole moment of HCN clusters can be quantitatively described.