title: 4,4,5,5-Tetra-methyl-2-(4-pyridyl)-imidazolidin-1-oxyl-3-oxide trichloroacetic acid solvate.
abstract: In the title compound, C(12)H(16)N(3)O(2)·C(2)HCl(3)O(2), the imidazolidine ring adopts a twist conformation. The crystal structure is stabilized by inter-molecular O-H⋯N hydrogen bonds.
authors.forename: Hong-Xian
authors.initials: HX
authors.lastname: Chen
authors.forename: Zhong-Shu
authors.initials: ZS
authors.lastname: Li
authors.forename: Bai-Wang
authors.initials: BW
authors.lastname: Sun