Acta Cryst. (2001). E57, o786-o787 [ doi:10.1107/S1600536801010716 ]
Abstract: The crystal structure of the isoindoline nitroxide amide 5-acetamido-1,1,3,3-tetramethylisoindolin-2-yloxyl, C14H19N2O2, which has utility as an EPR label, shows a characteristically stable tetramethyl-substituted nitroxide ring system which is essentially coplanar with the amide side-chain substituent. A single intermolecular hydrogen bond between the amide H atom and the nitroxide O atom links the molecules head-to-tail into an infinite polymeric chain.
Copyright © International Union of Crystallography