Cooperativity in O2 binding to iron porphyrins.

AUTOR(ES)

Collman, J P

RESUMO

The solid-gas O2 binding equilibrium has been studied for for ferrous "picket fence" porphyrinates with sterically hindered axial imidazoles. Such systems show significant cooperativity in their binding of O2: at low O2 pressures a low O2 affinity form exists, and at high O2 pressures a higher O2 affinity form develops. Direct analogies are drawn to the cooperativity shown in O2 binding by hemoglobin. These model systems mimic hemoglobin quantitatively.

Documentos Relacionados

• Carbon monoxide binding to iron porphyrins.
• Synthesis and characterization of "face-to-face" porphyrins.
• Porphyrins. Their Biological and Chemical Importance
• CONCERNING THE NATURALLY OCCURRING PORPHYRINS. V. PORPHYRINS OF THE FECES 12
• Stabilization of higher-valent states of iron porphyrin by hydroxide and methoxide ligands: electrochemical generation of iron(IV)-oxo porphyrins.