4-Hydroxy-2,2,6,6-tetramethylpiperidinium trifluoroacetate

Abstract

The title compound, C9H20NO+·C2F3O2 −, is an important inter­mediate in the synthesis of hindered light stabilizers. The piperidinium ring adopts a chair conformation with the hydroxyl group in an equatorial position. The crystal packing is stabilized by O—H⋯O and N—H⋯O hydrogen bonds. The CF3 group is disordered over two positions with almost equal site occupancy factors.