Synthesis and properties of dimeric porphyrins

Methods for preparing covalently bonded porphyrin dimers with a face-to-fac e structure and their metal derivatives at e discussed. Computation results and data of X-ray diffraction and ESR, NMR, and electronic absorption spec troscopy are analyzed. The major attention is given to a correlation betwee n the structural features of dimeric porphyrins and their physicochemical, coordination, and catalytic properties.