title: A novel (3,4,10)-connected three-dimensional hydrogen-bonded supramolecular network containing a cyclic water hexamer.
abstract: The title compound, 4,4'-(1,1,1,3,3,3-hexafluoroisopropylidene)diphthalic acid hexahydrate, C(19)H(10)F(6)O(8).6H(2)O, crystallizes in the centrosymmetric space group Pbcn, with half of the diphthalic acid residue and three water molecules in the asymmetric unit. The organic molecule is located on a crystallographic twofold axis. In the solid, cyclic water hexamers in chair conformations have crystallographically imposed inversion symmetry. Strong O-H...O hydrogen bonds between the hexamers and organic molecules result in a unique three-dimensional supramolecular network [O...O = 2.554 (2)-2.913 (2) A]. This compound represents the first example of a (3,4,4,10)-connected four-nodal supramolecular topology with the Schläfli symbol (4(3).5.6.7)(2)(4(3).5(2).7)(2)(4(3))(2)(4(6).5(6).6(2).7(8).8(14).9(9)).
authors.affiliation: Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhou
authors.forename: Wen Na
authors.initials: WN
authors.lastname: Zhao
authors.forename: Lei
authors.initials: L
authors.lastname: Han
mesh_terms: D018360:Crystallography, X-Ray; D006845:Hydrocarbons, Fluorinated / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D010795:Phthalic Acids / Q000737:chemistry*; D014867:Water
chemical_list: C543557:4,4'-(1,1,1,3,3,3-hexafluoroisopropylidene)diphthalic acid hexahydrate; D006845:Hydrocarbons, Fluorinated; D010795:Phthalic Acids; D014867:Water