Özet:
In the title compound, C25H35N2 +·Cl -·H2O, the imidazolidine ring adopts a twisted conformation, with a pseudo-twofold axis passing through the N - C - N carbon and the opposite C - C bond. The N - C - N fragment of the imidazolidine ring shows some degree of both double- and single-bond character due to partial electron delocalization. One of the tert-butyl groups is disordered over two conformations with occupancies of 0.714 (8) and 0.286 (8). In the crystal, O - H⋯Cl and C - H⋯O hydrogen bonds help to establish the packing.