Development of and Problems in the Chemistry of Mercury‐Nitrogen Compounds

Abstract

There have been few recent additions to the group of mercury-nitrogen conyounds. Current developments in this field are mainly concerned with the elucidation of the structures of these coinpounds. The structures of coordination-polymeric ffg-N compounds may be considered from the point of view of their relationship with silicates. The bond parameters of the Hg-N grouping are compared with the parameters of bonds between mercury and elements adjacent to nitrogen in the periodic system.

catena-Poly[mercury(II)-di-μ-chloro-μ-pyridazine-κ2N:N′]

“…Comment N-Donor ligands generate a wide variety of coordination compounds with mercury (e.g. Grdenic Â, 1965;Breitinger & Brodersen, 1970). We have carried out a systematic study of the af®nity of mercury towards N-donor ligands (Nockemann, 2002;Meyer & Nockemann, 2003).…”

μ-Pyrazine-κ2N:N′-bis[diiodomercury(II)]

“…The coordination chemistry of divalent mercury with N-donor ligands has been reviewed several times (e.g. Grdenic Â, 1965;Breitinger & Brodersen, 1970). In a systematic structural study, we have used diazines as N-donor ligands to mercuric halides (Nockemann, 2002;Meyer & Nockemann, 2003).…”

The Mixed-Metal Oxochromates(VI) Cd(HgI2)2(HgII)3O4(CrO4)2, Cd(HgII)4O4(CrO4) and Zn(HgII)4O4(CrO4)—Examples of the Different Crystal Chemistry within the Zinc Triad

“…To a certain extent, these features can be related to relativistic effects that are pronounced for this element [3,4]. While a number of review articles devoted to the crystal chemistry of mercury have been published over the years [5][6][7][8][9][10][11], to the best of the author's knowledge, apart from chapters in a compendium on coordination chemistry [11,12], special reviews on the crystal chemisty of zinc or cadmium did not appear thus far.…”