title: Anion-controlled endo- and exocyclic disilver(I) complexes of an S2O3 macrocycle.
abstract: Anion-controlled endo- and exocyclic complexes were afforded in the reactions of an S(2)O(3) macrocycle with AgPF(6) and AgClO(4), respectively. The two coordination modes that provide the Ag ion position inside (by PF(6)(-)) or outside (by ClO(4)(-)) the macrocyclic cavity are explained by the anion-coordination ability toward the metal cation. Furthermore, each Ag center bridges two ligands via a regular coordinative bond or by pi coordination, forming a cyclic dimeric-type product. NMR titrations of the complex system in solution were also carried out.
authors.affiliation: Department of Chemistry (BK21) and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, South Korea.
authors.forename: Hyun Jee
authors.initials: HJ
authors.lastname: Kim
authors.forename: Shim Sung
authors.initials: SS
authors.lastname: Lee