Crystals of the title adduct, C(10)H(8)N(2)·2C(3)H(3)NO(2), were obtained from a methanol/water solution of cyano-acetic acid and 4,4'-bipyridine at room temperature. In the crystal structure, cyano-acetic acid and centrosymmetric 4,4'-bipyridine mol-ecules are linked by O-H⋯N hydrogen bonds to form three-component supra-molecular adducts. The acidic H atom is almost midway between the O and N ...

The synthesis and conformational behavior of two cyclodextrin dimers containing aromatic bipyridine spacers is presented. The proton NMR spectra of these dimers in aqueous solution show a doubling of signals in the aromatic region due to complete or partial self-inclusion of the spacer. The degree and the strength of self-inclusion is dependent on the substitution pattern of the bipyridine unit...

A bis(resorcinarene) substituted 2,2'-bipyridine was found to bind weakly to small esters like ethyl acetate whereas more bulky esters were not recognized by this hemicarcerand. This size selective molecular recognition could be controlled by a negative cooperative allosteric effect: coordination of a triscarbonyl rhenium chloride fragment to the bipyridine causes a conformational rearrangement...

In the title compound, 2C(8)H(6)O(4)·C(10)H(8)N(2), the 4,4'-bipyridine mol-ecule is located on an inversion centre. In the crystal structure, strong inter-molecular O-H⋯N hydrogen bonds between the terephthalic acid and 4,4'-bipyridine mol-ecules lead to the formation of chains with graph-set motif C(2) (2)(8) along the diagonal of the bc plane.

The asymmetric unit of the title compound, 2C(7)H(2)F(4)O(2)·C(10)H(8)N(2), contains one mol-ecule of 2,3,4,5-tetra-fluoro-benzoic acid (tfb) and half of a centrosymmetric 4,4'-bipyridine mol-ecule. Inter-molecular O-H⋯N hydrogen bonds link two tfb mol-ecules and one 4,4'-bipyridine mol-ecule into a trimer. Weak inter-molecular C-H⋯F inter-actions assemble these trimers into a three-dimensional...

The complex [Ir(ppy)(2)(dpbpy)][PF(6)] (Hppy = 2-phenylpyridine, dpbpy = 6,6'-diphenyl-2,2'-bipyridine) has been prepared and evaluated as an electroluminescent component for light-emitting electrochemical cells (LECs); the complex exhibits two intramolecular face-to-face pi-stacking interactions and long-lived LECs have been constructed; the device characteristics are not significantly improve...

The crystal structure of the title compound, C(10)H(8)N(2)·2C(2)H(4)O(2), is built up from 4,4'-bipyridine and acetic acid mol-ecules linked by strong O-H⋯N hydrogen bonds. The 4,4'-bipyridine and the two acetic acid mol-ecules are further connected through weak C-H⋯O hydrogen bonds to form a supra-molecular two-dimensional network parallel to the (001) plane. The two pyridine rings make a dihe...

Direct C–H functionalization catalyzed by a robust and recyclable heterogeneous catalyst is highly desirable for sustainable fine chemical synthesis. Bipyridine units covalently incorporated into the backbone of porous organic polymer were used as macroligand heterogenization molecular nickel catalyst. A controlled loading within achieved, coordination to bipyridine (bpy) sites assessed at leve...

The title two-component mol-ecular crystal, C(10)H(8)N(2)·C(2)H(4)N(4)S, was obtained unexpectedly by reaction of Zn(NO(3))(2)·6H(2)O, NH(4)BF(4) with 3-amino-1,2,4-triazole-5-thione (3-AMT) and 4,4'-bipyridine in water. The dihedral angle between the pyridine rings in the 4,4'-bipyridine molecule is 17.00 (13)°. In the crystal, N-H⋯N and N-H⋯S hydrogen bonds between the components lead to the ...