Silver(I) and mercury(II) complexes with N,N′-bis(acetylacetone)-1R,2R-diaminocyclohexane ligands exhibiting three different coordination modes

Treatment of AgNO3 with one equiv. of N,N′-bis(acetylacetone)-1R,2R-diaminocyclohexane (L) afforded a mononuclear complex [Ag(η2-L)NO3] (1) in which the central silver(I) atom adopts a distorted trigonal planar geometry by coordinating two carbon atoms of the methane moieties of the ligand and one oxygen atom of the NO3− group. Interaction of CF3COOAg with one equiv. of L produced a one-dimensional coordination polymer [Ag2(μ-L)(CF3CO2)2]n (2). Each silver(I) in 2 exhibits highly distorted square planar coordination geometry that connects one oxygen atom of L and one neighboring Ag atom with the Ag⋯Ag interactions. Reaction of HgCl2 with one equiv. of L resulted in the formation of one-dimensional [{Hg(μ-Cl)Cl}2(μ-η1-L)]n (3) with a C-coordinated dinuclear mercury(II) chloride moiety being linked by L.

The synthesis and characterization of silver(I) and mercury(II) complexes with N,N′-bis(acetylacetone)-1R,2R-diaminocyclohexane ligands which act as the bridging ligands through the coordination of the oxygen atoms of the acetamide groups and the carbon atoms of the methane moieties were presented. Figure optionsDownload as PowerPoint slideHighlights
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