title: catena-Poly[[aqua-(pyrazino[2,3-f][1,10]phenanthroline-κN,N)cobalt(II)]-μ-pyrazine-2,3-dicarboxyl-ato-κNO:O].
abstract: In the title compound, [Co(C(6)H(2)N(2)O(4))(C(14)H(8)N(4))(H(2)O)](n), the Co atom is bonded to one N,N'-bidentate pyrazino[2,3-f][1,10]phenanthroline (Pyphen) ligand, one N,O-bidentate pyrazine-2,3-dicarboxyl-ate (PZDC) dianion and one water mol-ecule in a distorted octa-hedral mer-CoN(3)O(3) geometry. The Co(II) atoms are bridged by the PZDC dianions, forming an infinite one-dimensional chain running along the b axis. Adjacent chains pack together through π-π stacking inter-actions [centroid-centroid separations = 3.498 (4) and 3.528 (4) Å], and O-H⋯O and O-H⋯N hydrogen bonds involving the water mol-ecule complete the structure.
authors.affiliation: Department of Chemistry, Jilin Normal University, Siping 136000, People's Republic of China.
authors.forename: Zhan-Lin
authors.initials: ZL
authors.lastname: Xu
authors.forename: Xiu-Ying
authors.initials: XY
authors.lastname: Li
authors.forename: Guang-Bo
authors.initials: GB
authors.lastname: Che
authors.forename: Lu
authors.initials: L
authors.lastname: Lu
authors.forename: Chun-Hui
authors.initials: CH
authors.lastname: Xu