Crystal and molecular structure of the mercury dichloride complex with the macrocyclic dibenzo-aza-14-crown-4 ether ligand containing the embedded Di(α-pyridyl)bispidone fragment, [Hg(L)Cl 2 ]

The crystal and molecular structure of [Hg(L)Cl 2 ] ( I ), where L is dibenzo-aza-14-crown-4 ether with the embedded di(α-pyridyl)bispidone fragment, is studied by X-ray diffraction. The irregular five-vertex polyhedron of the Hg atom is formed by two Cl atoms and three N atoms of the dipyridylbispidone part of the L molecule. The O and N atoms of the macrocycle are not involved in metal coordination. The structure of complex I is compared with the structures of compounds [Zn(L)Cl 2 ] · C 2 H 5 OH, [Co(L)(H 2 O)][CoCl 4 ], and [Cu(L)(H 2 O)](ClO 4 ) · 2H 2 O studied earlier.