title: Crystal structure of poly[[μ3-4,4'-(4,4'-bipyridine-2,6-diyl)dibenzoato]{μ2-4-[6-(4-carboxyphenyl)-4,4'-bipyridin-4'-ium-2-yl]benzoato}manganese(II)] hemi-hydrate].
abstract: The title compound, {[Mn(C24H14N2O4)(C24H16N2O4)]·0.5H2O} n , was obtained by the reaction of manganese nitrate with the ligand 4,4'-(4,4'-bi-pyridine-2,6-di-yl) di-benzoic acid under hydro-thermal conditions. The water O atom is located on a twofold rotation axis. The Mn(2+) ion is hepta-coordinated by six O atoms and one N atom from the ligands. In this structure, the ligands adopts two different forms, one completely deprotonated and one with a protonated N atom (pyridinium) and a carboxylic acid function. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds consolidate the packing, forming a three-dimensional framework.
authors.affiliation: Department of Ophthalmology, Yhe Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, Jilin Province, People's Republic of China.
authors.forename: Yaping
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Vascular Surgery, The China-Japan Union Hospital of Jilin University, 126 Xiantai Street, Changchun, 130033, Jilin Province, People's Republic of China.
authors.forename: Dajun
authors.initials: D
authors.lastname: Sun
authors.affiliation: St Erik's Eye Hospital, Karolinska Institutet, Polhemsgatan 50, SE-112-82, Stockholm, Sweden.
authors.forename: Julia
authors.initials: J
authors.lastname: Ming
authors.affiliation: Department of Gynaecology, Yhe Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, Jilin Province, People's Republic of China.
authors.forename: Liying
authors.initials: L
authors.lastname: Han
authors.affiliation: Department of Ophthalmology, Yhe Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, Jilin Province, People's Republic of China.
authors.forename: Guanfang
authors.initials: G
authors.lastname: Su
keywords: Mn complex; crystal structure; hydrogen bonds; metal-organic coordination polymer