Chemistry Letters, Vol.29, No.9, 1060-1061, 2000
Nitrosyl iron(II) complex of meso-tetrakis(alpha,alpha,alpha,alpha-o-pivalamidophenyl)porphyrin with a covalently linked 2-methylimidazolylalkyl group
meso-Tetrakis(alpha,alpha,alpha,alpha-o-pivalamidophenyl)porphinato-iron (II) with an intramolecularly bound 2-methylimidazole forms a six-coordinate nitrosyl complex in toluene at 298 K, which is revealed by ESR and IR spectroscopy; the NO-binding affinity (P-1/2) is 1.8 x 10(-8) Torr and the association rate constant (k(on)) is 8.9 x 10(8) M(-1)s(-1).