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

The title compound, Hg(C_6H_4NO_2)(C_6H_5NO_2), has twoflod symmetry along the Hg-I bond. The Hg(II) ion coordinates one I atom (at 2.6045 (4) Å ), two N and O atoms (at 2.298 (3) and 2.481 (2) Å ) 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 disoredered, and is involved in a intermolecular O-H...O hydrogen bond (O...O=2.455 (4) Å ) connecting molecules into one-dimensional infinite chains along (101) direction.

mercury(II); picolinic acid; crystal and molecular structure

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