Crystal Structure of Di-μ 1,N 1-Diethyl 4-[(Pyridin 4)Mercury(II)]

Abstract

The title dinuclear mercury(II) complex, [Hg<inf>2</inf>C<inf>l4</inf> (C<inf>16</inf>H<inf>19</inf>N<inf>3</inf>)2], synthesized from the pyridine-derived Schiff base (E)-N 1,N 1-diethyl-N 4-[(pyridin-2-yl)methylidene]benzene-1,4-diamine (DPMBD), has inversion symmetry. The five-coordinated HgII atoms have distorted square-pyramidal stereochemistry comprising two N-Atom donors from bidentate chelate BPMBD ligands and three Cl-Atom donors, two bridging and one monodentate. The dihedral angle between the benzene and the pyridine rings in the BPMBD ligand is 7.55 (4)°. In the crystal, the dinuclear molecules are linked by weak C-H⋯Cl hydrogen bonds, forming zigzag ribbons lying parallel to [001]. Also present in the structure are π-π interactions between benzene and pyridine rings [minimum ring-centroid separation = 3.698 (8) Å]. © 2017.