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

Pushpendra Singh; Harkesh B Singh; Ray J Butcher

doi:10.1107/S2056989018010423

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

Acta Crystallogr E Crystallogr Commun. 2018 Jul 27;74(Pt 8):1151-1154. doi: 10.1107/S2056989018010423. eCollection 2018 Aug 1.

Authors

Pushpendra Singh¹, Harkesh B Singh², Ray J Butcher³

Affiliations

¹ Department of Chemistry, Dr. Shakuntala Misra National Rehabilitation University, Mohaan Road Lucknow, 226017, India.
² Department of Chemistry, Indian Institute of Technology Bombay, Powai 400 076, Mumbai, India.
³ Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA.

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.

Grants and funding

This work was funded by National Science Foundation, Directorate for Mathematical and Physical Sciences grants 1205608 and CHE0619278. Department of Science and Technology, Ministry of Science and Technology, Science and Engineering Research Board grants J.C. Bose National Fellowship and SB/FT/CS-036/2012.