title: catena-Poly[diimidazolium [bis-(μ-pyridine-2,5-dicarboxyl-ato)bis-[diaqua-praseodymate(III)]]-bis-(μ-pyridine-2,5-dicarboxyl-ato)].
abstract: The title compound {(C(3)H(5)N(2))(2)[Pr(2)(C(7)H(3)NO(4))(4)(H(2)O)(4)]}(n), has a chain structure featuring a dimeric unit consisting of two Pr(III) atoms within a dodecahedral environment. Each of the metal cations is coordinated by two N atoms and two O atoms from two pyridine-2,5-dicarboxyl-ate ligands, two O atoms from another two pyridine-2,5-dicarboxyl-ate ligands and two water O atoms. The Pr(III) ions are bridged by two ligands along the c axis, forming the dimeric unit, and these are connected by four ligands along the b axis, forming a chain. N-H⋯O and O-H⋯O hydrogen bonds are found in the structure.
authors.forename: Wenjun
authors.initials: W
authors.lastname: Zhang
authors.forename: Yanmei
authors.initials: Y
authors.lastname: Chen
authors.forename: Tao
authors.initials: T
authors.lastname: Lei
authors.forename: Yahong
authors.initials: Y
authors.lastname: Li
authors.forename: Wu
authors.initials: W
authors.lastname: Li