The absorption spectra, magnetic moments and the binding of iron in some haemoproteins

Abstract

This suggests that if 'complexes' are prepared in which a large drop in the intensity of this band is observed, then, in all probability, an attack has taken place on the porphyrin ring rather than a simple change in the coordination to the iron (see following paper). The m-and fl-bands are more intense in low-spin than in high-spin complexes (see Table 1). The intensity of the oband in low-spin complexes is very dependent on Vol. 78 247

Usefulness of Myoglobin Containing Cobalt Heme Cofactor in Designing a Myoglobin-Based Artificial Oxygen Carrier

“…A) are rather intense. This is in contrast with aquomet Fe(III) Mb spectrum where the α (ε 580 = 2.5 1/(mM cm)) and β (ε 530 = 7.5 1/(mM cm)) peaks are observed as obscure inflectional bands . Because a good correlation between the appearance of the α and β bands and the dominance of low‐spin state of the metal center is well established in hemoprotein , the visible spectrum in Fig.…”

Correlation Between the Optical and Magnetic Properties of Ferric N-Acetylated Heme Octapeptide Complexes

“…This has been demonstrated nicely in a large number of hemoprotein derivatives (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). Our investigation of the absorption and MCD spectral behavior and of the magnetic susceptibility of the ferric N-HBPT complexes has shown that such correlation may be extended to model system studies (15).…”

Versatile ligational behavior of azopyrazolone derived from hydralazine

“…Bands at 630 nm (E ¼ 55) could be due to 6 A 1g ! 4 T 1g transition and that at 412 nm (E ¼ 50) may be assigned [11] [12]. This complex shows broad asymmetric bands in the region 680 nm (E ¼ 50) and at 512 nm (E ¼ 250) assignable to 2 B 1g !…”