title: (6-Oxido-2-oxo-1,2-dihydropyrimidine-5-carboxylato-κ2O5,O6)bis[2-(2-pyridyl)-1H-benzimidazole-κ2N2,N3]manganese(II) monohydrate.
abstract: In the title compound, [Mn(C(5)H(2)N(2)O(4))(C(12)H(9)N(3))(2)]·H(2)O, the Mn(II) centre is surrounded by three bidentate chelating ligands, namely, one 6-oxido-2-oxo-1,2-dihydropyrimidine-5-carboxylate (or uracil-5-carboxylate, Huca(2-)) ligand [Mn-O = 2.136 (2) and 2.156 (3) Å] and two 2-(2-pyridyl)-1H-benzimidazole (Hpybim) ligands [Mn-N = 2.213 (3)-2.331 (3) Å], and it displays a severely distorted octahedral geometry, with cis angles ranging from 73.05 (10) to 105.77 (10)°. Intermolecular N-H···O hydrogen bonds both between the Hpybim and the Huca(2-) ligands and between the Huca(2-) ligands link the molecules into infinite chains. The lattice water molecule acts as a hydrogen-bond donor to form double O···H-O-H···O hydrogen bonds with the Huca(2-) O atoms, crosslinking the chains to afford an infinite two-dimensional sheet; a third hydrogen bond (N-H···O) formed by the water molecule as a hydrogen-bond acceptor and a Hpybim N atom further links these sheets to yield a three-dimensional supramolecular framework. Possible partial π-π stacking interactions involving the Hpybim rings are also observed in the crystal structure.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, People's Republic of China.
authors.forename: Cheng-Bing
authors.initials: CB
authors.lastname: Ma
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.forename: Ming-Qiang
authors.initials: MQ
authors.lastname: Hu
authors.forename: Chang-Neng
authors.initials: CN
authors.lastname: Chen
mesh_terms: D002614:Chelating Agents / Q000737:chemistry; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008024:Ligands; D008345:Manganese / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*
chemical_list: D002614:Chelating Agents; D008024:Ligands; D009942:Organometallic Compounds; D008345:Manganese