5,5 '-Diamino-2,2 '-bipyridin-1,1 '-diium bis(5,5 '-diamino-2,2 '-bipyridin-1-ium) tetrakis(rac-1,1 '-binaphthalene-2,2 '-diylphosphate) hexahydrate: a two-dimensional supramolecular hydrogen-bonded network

作者：Wisser Barbara; Janiak Christoph^*

来源：Acta Crystallographica Section E-Structure Reports Online, 2007, 63: O2871-U2215.

DOI：10.1107/S1600536807021794

In the title compound, C10H12N42+center dot 2C(10)H(11)N(4)(+)center dot 4C(20)H(12)O(4)P(-)center dot 6H(2)O, the 1,1'- binaphthalene-2,20-diyl phosphate anion and 5,5'-diamino-2,2'-bipyridine as hydrogen-acceptor and -donor building blocks, respectively, are combined in a supra-molecular two-dimensional hydrogen-bonding network of one centrosymmetric diprotonated diaminobipyridin-1,1'-ium dication, two monoprotonated diaminobipyridinium cations, four phosphate counter-anions and six water molecules of crystallization. Protonation of diaminobipyridine to the bipyridinium mono- or dication enhances the hydrogen bonding due to the primary electrostatic attraction with the anion. The packing can be rationalized by a separation of the hydrophobic binaphthyl backbone from the hydrophilic (RO)(2)PO2- phosphate groups, bipyridinium cation and water components. The binaphthyl tail-to-tail packing in the hydrophobic lamellae as well as the diaminobipyridinium packing is governed by pi-pi and C-H center dot center dot center dot pi interactions.

• 出版日期2007-6