Iodo(picolinato-kappa(2)N,O)(picolinic acid-kappa(2)N,O)mercury(II).

The title compound, [Hg(C(6)H(4)NO(2))I(C(6)H(5)NO(2))], has twofold symmetry along the Hg-I bond. The Hg(II) ion coordinates one I atom [at 2.6045 (4) Angstrom], two N and two O atoms [at 2.298 (3) and 2.481 (2) Angstrom] from one picolinate ion, and one picolinic acid molecule in a very irregular trigonal-bipyramidal coordination. The single hydroxy H atom required for chemical neutrality is both statistically (by crystal symmetry) and structurally disordered, and is involved in an intermolecular O-H...O hydrogen bond [O...O = 2.455 (4) Angstrom], connecting the molecules into one-dimensional infinite chains along the [101] direction.