Abstract
Mercury(II) complexes of selones (L) having the general formulae, [L 2HgCl 2], [L 3HgCl]Cl and [L 4Hg]Cl 2 have been prepared and characterized by elemental analysis, IR and NMR ( 1H, 13C, 15N, 77Se, 199Hg) spectroscopy. A decrease in the IR frequency of the C Se mode upon complexation is indicative of mercury(II) binding via a selone group. Upfield shifts in C Se resonance of selones in 13C and 77Se NMR and downfield shifts in N H resonances in 1H and 15N NMR are consistent with the selenium coordination to mercury(II). The complex of dichloro-bis( N- isopropyl-imidazolidine-2-selone-S)mercury(II), has been characterized by X-ray crystal analysis. The principal components of the 77Se and 199Hg shielding tensors were determined from solid-state NMR data.
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