title: Extra large macrocycle: 40-membered macrocycle via 2:2 cyclization and its dimercury(II) complex.
abstract: A large 40-membered N(4)O(4)S(4) macrocycle (L(2)) was obtained through a 2:2 cyclization of the corresponding dithiol and dichloride as a minor product during the preparation of a 20-membered N(2)O(2)S(2) macrocycle (L(1), 1:1 cyclization product). Each macrocycle was successfully separated from the mixed products and identified. The larger macrocycle L(2) allowed the preparation of its dimercury(II) complex, adopting a one-dimensional (1D) stairway-like polymeric chain linked with the anion. A monomercury(II) complex of the smaller macrocycle L(1) was also prepared. Both complexes and the larger macrocycle L(2) were structurally characterized by the single crystal X-ray analysis.
authors.affiliation: Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, S. Korea.
authors.forename: Daram
authors.initials: D
authors.lastname: Jung
authors.forename: Rie
authors.initials: R
authors.lastname: Chamura
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Habata
authors.forename: Shim Sung
authors.initials: SS
authors.lastname: Lee