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Updated: Jun 1, 2026
12:59
A Study of the Complexation of Mercury(II) with Dicysteinyl Tetrapeptides by Electrospray Ionization Mass Spectrometry
Published on: January 8, 2016
Dibromido(di-2-pyridylamine-κN,N')mercury(II)
Summary
This study details the crystal structure of a mercury(II) compound with a di-2-pyridylamine ligand. The mercury atom exhibits a distorted tetrahedral coordination, with intermolecular hydrogen bonds forming dimers in the crystal lattice.
Area of Science:
- Coordination Chemistry
- Crystal Engineering
- Supramolecular Chemistry
Background:
- Di-2-pyridylamine is a versatile chelating ligand in coordination chemistry.
- Understanding the crystal packing and intermolecular interactions of metal complexes is crucial for designing novel materials.
Purpose of the Study:
- To elucidate the crystal structure and coordination environment of the mercury(II) complex, [HgBr(2)(C(10)H(9)N(3))].
- To investigate the intermolecular interactions, such as hydrogen bonding and π-π stacking, that govern the crystal packing.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of the crystal structure revealed coordination geometry, bond lengths, and intermolecular contacts.
Main Results:
- The mercury(II) center is four-coordinated in a distorted tetrahedral geometry by two nitrogen atoms of the di-2-pyridylamine ligand and two bromide ions.
- Intermolecular N-H⋯Br hydrogen bonds link the molecules into centrosymmetric dimers.
- Significant π-π stacking interactions between pyridine rings and a C-H⋯π contact were observed, contributing to the crystal lattice stabilization.
Conclusions:
- The crystal structure of [HgBr(2)(C(10)H(9)N(3))] is characterized by a distorted tetrahedral mercury(II) coordination sphere.
- Intermolecular hydrogen bonding and π-π interactions play a key role in the self-assembly of the crystal structure into dimers and extended networks.
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