High Co-ordination Numbers for Methylmercury(II); X-Ray and 1H N.M.R. Studies of [MeHgL]NO3 (L = 4,4',4‚ÄövÑvp-Triethyl-2,2':6',2‚ÄövÑvp-terpyridyl and Di-2-pyridylmethane)

Methylmercury(II) forms complexes [MeHgL]NO3 (L = 2,2': 6',2‚ÄövÑvp-terpyridyls and di-2-pyridylmethane) where the ligands L are bidentate in methanol, but tridentate and bidentate, respectively, in the solid state with co-ordination geometries for mercury based on a near linear dominant C-Hg-N unit with additional weak Hg-N bonding.