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.