{ N1-[2-(Butyl-selan-yl)benz-yl]- N2, N2-di-methyl-ethane-1,2-di-amine}-dichlorido-mercury(II)

Abstract

In the title compound, [HgCl₂(C₁₆H₂₈N₂Se)], the primary geometry around the Se and Hg atoms is distorted trigonal-pyramidal and distorted square-pyramidal, respectively. The distortion of the mol-ecular geometry in the complex is caused by the steric demands of the ligands attached to the Se atom. The Hg atom is coordinated through two chloride anions, an N atom and an Se atom, making up an unusual HgNSeCl₂ coordination sphere with an additional long Hg⋯N inter-action. Inter-molecular C-H⋯Cl inter-actions are the only identified inter-molecular hydrogen-bonding inter-actions that seem to be responsible for the self assembly. These relatively weak C-H⋯Cl hydrogen bonds possess the required linearity and donor-acceptor distances. They act as mol-ecular associative forces that result in a supra-molecular assembly along the b-axis direction in the solid state of the title compound.

Keywords: crystal structure; mercury (II) complexes; mercury–selenium bonding.

Figure 1

The mol­ecular structure of {N ¹-[2-(Butyl­selan­yl)benz­yl]-N ²,N ²-di­methyl­ethane-1,2-di­amine}­dichlorido­mercury(II). The inter­action between Hg1 and N1 is shown with a dashed line. Anisotropic displacement parameters are at the 30% probability level.

Figure 2

Packing diagram of the title compound viewed along the c axis showing how the C—H⋯Cl inter­actions (shown with dashed lines) link the mol­ecules into chains along the b-axis direction.