The Coordination Chemistry of Mercury

Coordination chemistry of the main group elements with phosphine, arsine and stibine ligands

“…As can be seen, all the elements have at least one NMR active nucleus. In the absence of chemical problems such as fast exchange on the NMR timescale, all the I = 1/2 nuclei can be observed relatively easily (all have a greater receptivity than 13 C, although 29 Si and 119 Sn have long T 1 's which can be problematic). The quadrupolar nuclei are a more mixed batch, 9 Be and 11 B have small Q's and are easily observed, 27 Al and 71 Ga can be observed if the electric field gradient is sufficiently small, whereas in practice 115 In is only seen in close to cubic symmetry environments.…”

“…Their chemistry was often included in reviews on transition metal complexes ( [10] and refs therein), and the earlier work on Hg is detailed in reviews of the coordination and structural chemistry of the element [28,29]. However, since the M(II) complexes contain d 10 metal centres they also fit within the scope of the present article, and since no recent reviews exist, they are discussed below.…”

“…Although the basic types of mercury(II) phosphine and arsine complexes were established at much the same time as those of the cadmium analogues [29], mercury has remained an active area of research with significant amounts of new work reported in the last twenty years. The well-known [HgX 2 (PR 3 ) 2 ] type have the expected distorted tetrahedral geometries, and have been much studied by X-ray crystallography and 31 P{ 1 H} and 199 Hg NMR (I = 1/2, 17%, Rc = 5.7) spectroscopy, with the Hg-P bond lengths, <P-Hg-P angles and 1 J( 31 P-199 Hg) coupling constants all showing a significant dependence upon the halide and the phosphine present.…”

Synthesis, crystal structures and cytotoxicities of some transition metal complexes with N-[2-{(pyridin-2-ylmethylidene)amino}ethyl]acetamide

“…The dihedral angle between the equatorial plane and the N(1)-N(2)-Cl(1) plane is 93.2°. The Hg atom deviates from the equatorial plane by 0.32 Å in [27,28]. However, it should be noted that one of the two Hg-Cl (bridging) bonds is 0.322 Å shorter than the other.…”

Synthesis and Spectral Characterization of Bis(3(4-dimethylaminophenyl)-2-prop-1-enylydene)-1,2-diaminoethane and Some New Mercury Complexes: An Antibacterial and Antifungal Investigation

“…Its interactions in biosystems and its ability as a toxicant or as a drug means that its coordination characteristics should be known well. [25,26] Recently, a lot of mercury complexes have been studied because of their applications in biological, analytical, medical and pharmacological fields. Hg complexes with the Schiff base ligand of 2,6-bis(benzimidazole-2yl)pyridine revealed suitable antibacterial/antifungal activities against some microorganisms.…”