Propane-1,2-diammonium bis-(6-carboxy-pyridine-2-carboxyl-ate) dihydrate.

ABSTRACT: The reaction of propane-1,2-diamine (pn) and pyridine-2,6-dicarboxylic acid (pydcH(2)) in a 1:2 molar ratio in aqueous solution resulted in the formation of the title compound, C(3)H(12)N(2) (2+)·2C(7)H(4)NO(4)·2H(2)O or (pnH(2))(pydcH)(2)·2H(2)O. The structure contains two monoanionic deprotonated forms of pyridine-2,6-dicarboxylic acid molecules (pydcH)(-), a diprotonated propane-1,2-diamine (pnH(2))(2+), and two water mol-ecules. A significant ?-? stacking inter-action is observed between the pyridyl rings of the (pydcH)(-) fragments, with a face-to-face distance of 3.6194?(9)?Å. In the crystal structure, a wide range of non-covalent inter-actions consisting of ion pairing, hydrogen bonding [of the types of O-H?O, N-H?O, N-H?N and C-H?O, with D?A distances in the range 2.454?(2)-3.222?(2)Å] and ?-? stacking inter-actions [centroid-centroid distance = 3.6194?(9)?Å] connect the components into a supra-molecular structure.

SUBMITTER: Aghabozorg H 

PROVIDER: S-EPMC2961371 | biostudies-literature | 2008 May

REPOSITORIES: biostudies-literature