• Bulletin of the Korean Chemical Society
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• v.27 no.2
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• pp.203-207
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• 2006

Isomeric series of dilinked $NO_2S_2$ macrocycles ($L^2$: para-, $L^3$: meta- and $L^4$: ortho-linked) capable of binuclear complexing ability were prepared from its monomeric analog $L^1$ in reasonable yields except ortho-type reaction, which led to mixture due to the formation of monomer-type macrocyclic quaternary ammonium bromide $L^5$. Moreover, L2 (as $2HNO_3$ form) and $L^5$ were confirmed by an X-ray crystallography. Reaction of $HgCl_2$ with $L^2$ yielded a binuclear complex $[Hg_2(L^2)Cl_4]$. In the complex, each mercury(II) has a distorted tetrahedral environment made up of S and N donors from an exodentate $L^2$ and two coordinated Cl atoms.