μ‐Oxodiiron(III) Complexes of Porphycenes

Far-reaching analogies between μ-oxodiiron(III) complexes of porphycenes and porphyrins with regard to physical, chemical, and structural properties are revealed by investigations of the new metallopor-phycenes 1 (R  nPr, tBu). These are obtained by using standard methods for porphyrin chemistry. The Fe-O-Fe angle in 1 (R  nPr) differs widely (145°) from those of the metalloporphyrins (161–180°) and that of 1 (R  tBu; 179°) as a result of reduced steric interactions.