title: Cyclic water clusters in tape-like and cage-like structures.
abstract: Controlling the ratio of 2,2'-bpy to benzene-1,3,5-tricarboxylic acid produces two interesting complexes, namely [Co(2,2'-bpy)₃]·(SO₄)·8.5H₂O (1) and [Cu₂(BTCA) (2,2'-bpy)₄] (OH)·(2,2'-bpy)₀.₅·14H₂O (2) (H₃BTCA = benzene-1,3,5-tricarboxylic acid, 2,2'-bpy = 2,2'-bipyridine). We report the structural evidence in the solid state of discrete lamellar water cluster conformations. These units are found to act as supramolecular glue in the aggregation of cobalt (II) or copper (II) complexes to give three dimensional cage-like networks through hydrogen-bonding. It is interesting that the structure of complex 1 contains a 3D negatively charged cage.
authors.affiliation: College of Chemistry and Ecological Engineering, Guangxi University for Nationalities, Nanning 530006, China. huangqinpeking@163.com
authors.forename: Qin
authors.initials: Q
authors.lastname: Huang
authors.forename: Lihong
authors.initials: L
authors.lastname: Diao
authors.forename: Chuang
authors.initials: C
authors.lastname: Zhang
authors.forename: Fuhou
authors.initials: F
authors.lastname: Lei
mesh_terms: D006860:Hydrogen Bonding; D008958:Models, Molecular; D015394:Molecular Structure; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water