Syntheses and Crystal Structures of Xylyl-Bridged NO_2S_2-Donor Macrocycles and Binuclear Mercury(II) Complex

摘要

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,L~2 (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.