title: catena-Poly[[nickel(II)-μ-1,3-dimethyl-2,6-dioxo-7H-purinato-κN:N] hydroxide].
abstract: The title complex, {[Ni(C(7)H(7)N(4)O(2))]OH}(n), has been prepared through hydro-thermal synthesis. The asymmetric unit contains one [Ni(TH)](+) cation (TH is the theophylline anion) and one hydroxide anion. The Ni(2+) ion is coordinated by two N atoms from two neighboring theophylline anions. The alternating linkage of the Ni(2+) cation and theophylline anion results in a one-dimensional chain along the [010] direction. Intermolec-ular O-H⋯O hydrogen bonds are present n the crystal structure.
authors.affiliation: College of Environment and Planning, Henan University, Kaifeng 475001, People's Republic of China.
authors.forename: Lin-Heng
authors.initials: LH
authors.lastname: Wei