N-(2-Pyridinium)urea Perrhenate

The N-(2-pyridinium)urea cation of the title compound, C₆H₈N₃O⁺.ReO₄^-, is planar to within 0.085 (9) Å and adopts s-cis-s-cis conformation with respect to the imino C-N bonds. The structure consists of columns of centrosymmetric dimeric plane-to-plane stacked cations and hydrogen-bonded anions. The distance between the antiparallel carbonyl groups in the dimer is 3.16 (5) Å. An extensive network of hydrogen bonds stabilizes the ordering of the ions within the columns, which are held together by weaker hydrogen bonds and van der Waals interactions.

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