Zhou Yan, Zhao Wen Na, Han Lei
Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China.
Acta Crystallogr C. 2009 Jun;65(Pt 6):o287-9. doi: 10.1107/S0108270109010658. Epub 2009 May 2.
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)).
标题化合物，4,4'-(1,1,1,3,3,3-六氟亚异丙基)二邻苯二甲酸六水合物，C(19)H(10)F(6)O(8).6H(2)O，结晶于中心对称空间群Pbcn中，不对称单元包含半个二邻苯二甲酸残基和三个水分子。有机分子位于一个晶体学二重轴上。在固体中，呈椅式构象的环状水六聚体具有晶体学所赋予的反演对称性。六聚体与有机分子之间强烈的O-H...O氢键形成了独特的三维超分子网络[O...O = 2.554 (2)-2.913 (2) Å]。该化合物代表了具有Schläfli符号(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))的(3,4,4,10)-连接四节点超分子拓扑结构的首个实例。
