5,10,15,20-tetrakis[(4-ethylcarbonyl)oxy]-phenylporphyrin

[[abstract]]The crystal structure of the title compound, C56H46N4O8, shows the porphyrin core to be composed of four pyrrole rings linked through methene carbon bridges. Each molecule lies across a crystallographic inversion center. The porphyrin core is planar, which facilitates pi-electron delocalization. The inner nitrogen H atoms are found localized on opposite pyrrole rings and these rings differ structurally from the other two pyrrole rings.[[fileno]]2010337010178[[department]]化學