A single hydrogen bonded helix of 8-hydroxy-1,1,7,7-tetramethyljulolidine has been reported. The crystal belongs to space group R3, a = 16.496(2)Å, b = 16.49(2)Å, c = 13.609(3)Å, R1(I > 2) = 0.0442, wR2 (all data) = 0.1126, GOF = 1.077. The title compound forms a single helical structure along the c-axis with intermolecular H-bonding.
