Metal-bound chlorine often accepts hydrogen bonds

Abstract

Analysis of 6624 crystallographically characterised hydrogen bonds containing M–Cl, C–Cl or Cl– and either HO or HN groups show that M–Cl moieties are good, anisotropic hydrogen-bond acceptors forming hydrogen bonds similar in length to those of the chloride anion, while C–Cl moieties are very poor hydrogen-bond acceptors.