Porphyrins Assembled by Coordination to Nonporphyrinic Metals

Au(III) porphyrin a neutral radical. The diratlical species had a relatively long lifetime of. 3 ns. 

To promote the formation of square metallomacrocycles where the porphyrins form the edges, it is necessary to use porphyrins having two 4-pyridyl weso substituents in trans orientations (/.t., positions 5 and 1,5) like 59, but based on 

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