A three-coordinate complex of mercury: crystal structure of bis(iodo-N,N-diethyldithiocarbamatomercury(II))

Abstract

Reaction of mercuric iodide with N,N,N′,N′-tetraethylthiuramdisulfide (TETD), [Formula: see text] gave bis(iodo-N,N-diethyldithiocarbamatomercury(II)) and diiodo-N,N,N′,N′-tetraethylthiuramdisulfidemercury(II). The crystal of the former was mono-clinic with a = 7.645(3), b = 7.787(4), c = 18.005(7) Å and β = 102.08(4)°. The space group was P21/c, with two dimeric molecules per unit cell. Diffractometer measured intensities of 1727 observed reflections were used to determine the structure; the final R factor being 0.059. The mercuric ion was three-coordinated with two Hg—S distances of 2.422(4) and 2.644(4) Å and one Hg—I distance of 2.641(1) Å. The dimer had a centre of symmetry and formed an eight-membered ring.