4,4′-Bipyridinium bis(2-carboxypyridine-3-carboxylate)
نویسندگان
چکیده
The title salt, C(10)H(10)N(2) (2+)·2C(7)H(4)NO(4) (-) or (4,4'-bpyH(2))(py-2,3-dcH)(2), prepared by the reaction between pyridine-2,3-dicarboxylic acid (py-2,3-dcH(2)) and 4,4'-bipyridine (4,4'-bpy), consists of two anions and one centrosymmetric dication. In the crystal, there are two strong O-H⋯O hydrogen bonds involving the two carboxyl-ate groups, with an O⋯O distance of 2.478 (1) Å, and an N-H⋯N hydrogen bond between the anion and cation, with an N⋯N distance of 2.743 (1) Å. These inter-actions, along with other O-H⋯O and C-H⋯O hydrogen bonds, π-π stacking [centroid-centroid distances 3.621 (7) and 3.612 (7) Å] and ion pairing, lead to the formation of the three-dimensional structure.
منابع مشابه
1,1′-Dimethyl-4,4′-bipyridinium bis(triiodide)
In the title compound, C(12)H(14)N(2) (2+)·2I(3) (-), the 1,1'-dimethyl-4,4'-bipyridinium (DMBP) dication is charge balanced by two triiodide ions. The DMBP dication is planar within 0.010 (5) Å. The asymmetric unit contains only half of the dication, the other half being generated by an inversion center. Weak C-H⋯I inter-actions link the ions into sheets parallel to (121).
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