An improved procedure was used to prepare the asymmetric tripyrrane-containing macrocycles,The yield was over 85% These maerocycles could be oxidized to the met
The title complex [Co(TPPO)<sub>4</sub>] [Co(NCS)<sub>2</sub>TPPO]<sub>2</sub> (TPPO=triphenylphosphine oside) was prepared by solvent evaporation method. Its crystal