Two-dimensional molecular layers: Interplay of H-bonding and van der Waalsinteractions in the self-assembly of N,N '-dialkylsulfamides

GRAPHICS N,N'-Dialkylsulfamide molecules assemble into solid-state structures consis ting of 2D layers. The 2D layers are based on a hydrogen-bonded network of the sulfamide groups and the close-packing of alkyl groups on both sides of the 2D H-bonded network. The thickness of a 2D layer is proportional to th e size of the alkyl substituents. The interplay of H-bonding and van der Wa als interactions leads to stable 2D layers that pack into 3D structures.