Arylazopyridines-mercury(Ⅱ) coordination and organometallic compounds: Theoretical support

摘要

Arylazopyridines (Haap, 1) are mercurated by Hg(OAc)_2 in methanol followed by LiCl addition. Two classes of compounds are identified: Hg(Haap)Cl_2 (2), a simple coordination compound of tetrahedral geometry, and organomercury compounds, Hg(aap)Cl(3). The compounds are characterised by elemental analyses, IR and ~1H NMR spectra. The NMR results suggest that mercury is directed to the C-5 position (meta to pyridine-N) in the pyridine fragment of the ligand. This assumption is supported by net atomic charge calculation using the MNDO method.