Anion-controlled endo- and exocyclic disilver(I) complexes of an S2O3 macrocycle.
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.
Kim
Hyun Jee
HJ
Department of Chemistry (BK21) and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, South Korea.
Lee
Shim Sung
SS