title: catena-Poly[[diaqua-bis-(3-methyl-pyridine-κN)cobalt(II)]-μ-sulfato-κO:O'].
abstract: The environment of the Co(II) ion in the title compound, [Co(SO(4))(C(6)H(7)N)(2)(H(2)O)(2)](n), exhibits an octa-hedral configuration with the two 3-methyl-pyridine ligands lying in cis positions with respect to each other and trans to the two coordinated water mol-ecules. The axial positions are occupied by O atoms of the sulfate ions. Co and S atoms occupy special positions (twofold axis, Wyckoff position 4c). Neighboring Co(II) ions are covalently connected with each other through the sulfate ions, thus creating infinite polymeric chains that run along the c axis. The water mol-ecules are connected with neighboring sulfate ions through strong O-H⋯O hydrogen bonds. Intra-molecular hydrogen bonds parallel to the propagation direction of the chains stabilize the polymeric chains, and inter-molecular hydrogen bonds between chains connect neighboring chains with each other, thus leading to polymeric double chains.
authors.forename: Naveed
authors.initials: N
authors.lastname: Alam
authors.forename: Matthias
authors.initials: M
authors.lastname: Zeller
authors.forename: Nur Syamimi
authors.initials: NS
authors.lastname: Ahmad Tajidi
authors.forename: Zainudin
authors.initials: Z
authors.lastname: Arifin
authors.forename: Muhammad
authors.initials: M
authors.lastname: Mazhar
references.citation: Acta Crystallogr Sect E Struct Rep Online. 2010 Dec 08;67(Pt 1):m43
references.pmid: 21522564
references.citation: Acta Crystallogr B. 2009 Aug;65(Pt 4):467-73
references.pmid: 19617682
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677
references.citation: Dalton Trans. 2004 Sep 21;(18):2899-903
references.pmid: 15349164
references.citation: Inorg Chem. 2007 Mar 5;46(5):1789-94
references.pmid: 17269761