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. 2017 May 5;73(Pt 6):809-812.
doi: 10.1107/S2056989017005874. eCollection 2017 Jun 1.

Crystal structure of di-μ-chlorido-bis-(chlorido-{ N1, N1-diethyl- N4-[(pyridin-2-yl-κ N)methyl-idene]benzene-1,4-di-amine-κ N4}mercury(II))

Md Serajul Haque Faizi  1 , Necmi Dege  2 , Kateryna Goleva  3
Affiliations

Crystal structure of di-μ-chlorido-bis-(chlorido-{ N1, N1-diethyl- N4-[(pyridin-2-yl-κ N)methyl-idene]benzene-1,4-di-amine-κ N4}mercury(II))

Md Serajul Haque Faizi et al. Acta Crystallogr E Crystallogr Commun. .

Abstract

The title dinuclear mercury(II) complex, [Hg2Cl4(C16H19N3)2], synthesized from the pyridine-derived Schiff base (E)-N1,N1-diethyl-N4-[(pyridin-2-yl)methyl-idene]benzene-1,4-di-amine (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 mol-ecules are linked by weak C-H⋯Cl hydrogen bonds, forming zigzag ribbons lying parallel to [001]. Also present in the structure are π-π inter-actions between benzene and pyridine rings [minimum ring-centroid separation = 3.698 (8) Å].

Keywords: DPMBD; Schiff base; binuclear mercury(II) complex; crystal structure; distorted square-pyramidal coordination; five-coordinated mercury(II) ions.

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Figures

Figure 1
Figure 1
The mol­ecular structure of the title compound, with the atom labelling. Displacement ellipsoids are drawn at the 40% probability level. The unlabelled atoms are related to the labelled atoms by inversion symmetry (symmetry operation: −x + 2, −y + 1, −z + 1).
Figure 2
Figure 2
The crystal packing of the title compound, viewed along the c axis, with hydrogen bonds (Table 1 ▸) shown as dashed lines.
Figure 3
Figure 3
The crystal packing of the title compound, viewed approximately along the c axis. The π–π inter­actions between the benzene and pyridine rings are shown as dotted lines.
See this image and copyright information in PMC

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