Synthesis and Characterization of Durene-Capped Porphyrins and the Crystal Structure of a Hemin Derivative
David, S., David Dolphin,James, B.R., Paine, J.B.III, Wijesekera, T.P., Einstein, W.B., and Jones, T.,
Can. J. Chem.
Sterically hindered porphyrins I (n = 1, 2, 4) having a fully hydrophobic cavity have been prepared. The iron chloride derivative of I (n = 1) has been obtained as single crystals, and subjected to x-ray structural analysis. The typical high-spin, square-pyramidal geometry of 5-coordinate hemin chlorides is maintained; the porphyrin core is strongly distorted and there is no interaction between the Ph group of the strap and the Fe.