%0 Journal Article %T catena-Poly[[[diaquadiformatocobalt(II)]-μ-1,4-bis(1H-benzimidazol-1-yl)benzene] dihydrate] %A Ping-Yun Huang %A Jin-Guo Wang %A Sheng-Wu Guo %A Gang Shi %J Acta Crystallographica Section E %D 2012 %I International Union of Crystallography %R 10.1107/s160053681105505x %X In the title coordination polymer, {[Co(CHO2)2(C20H14N4)(H2O)2]¡¤2H2O}n, the CoII atom (site symmetry -1) is coordinated by two formate O atoms, two water O atoms and two N atoms from two 1,4-bis(1H-benzimidazol-1-yl)benzene ligands (L), resulting in a distorted trans-CoN2O4 octahedral coordination environment. The complete L ligand is generated by crystallographic inversion symmetry and serves to bridge the cobalt ions into a chain propagating in [1-1-1]. The dihedral angle between the central benzene ring and the imidazole ring system is 38.48 (12)¡ã. O¡ªH...O hydrogen bonds involving both the coordinated and uncoordinated water molecules occur and help to link the chains together. %U http://scripts.iucr.org/cgi-bin/paper?S160053681105505X