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Two-dimensional polymeric [Hg(4)(μ(2)-I)(6)I(2)(μ(2)-C(4)S(6))](n).

Aurélien Hameau, Fabrice Guyon, Michael Knorr

Acta Crystallographica. Section E, Structure Reports Online

|April 28, 2011

Summary

This study introduces a novel 2D coordination polymer using a unique dithione ligand and mercury(II) iodide. This structure exhibits interesting coordination geometries and layered arrangements.

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Area of Science:

Inorganic Chemistry
Materials Science
Crystallography

Background:

Coordination polymers offer diverse structural motifs and properties.
Mercury(II) iodide systems are known for their rich coordination chemistry.
Dithione ligands present unique coordination possibilities.

Purpose of the Study:

To synthesize and characterize a novel coordination polymer using a dithione ligand and mercury(II) iodide.
To investigate the structural features and coordination behavior of the new compound.
To explore the potential of dithione ligands in constructing extended inorganic networks.

Main Methods:

Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
Elemental analysis confirmed the stoichiometry of the compound.
Infrared spectroscopy was used to identify key functional groups.

Main Results:

The title compound, poly[(μ(2)-2H,5H-1,3-dithiolo[4,5-d][1,3]di-thiole-2,5-dithione)hexa-μ(2)-iodido-diiodidotetra-mercury(II)], [Hg(4)I(8)(C(4)S(6))](n), was successfully synthesized.
A two-dimensional coordination polymer structure was elucidated, featuring undulated layers parallel to the (001) plane.
Mercury(II) ions displayed distorted tetrahedral coordination geometries, satisfied by iodide ligands and thio-carbonyl sulfur atoms.

Conclusions:

The dithione ligand, α,α-C(4)S(6), acts as a bridging ligand, enabling the formation of a 2D coordination polymer.
The compound represents the first coordination polymer assembled by this specific dithione ligand.
The structural study provides insights into the coordination chemistry of mercury(II) with sulfur-containing ligands.