Corrigendum

Abstract

Figure 3 shows the single crystal X-ray structure of [Pd(tacn)#+, not [Pd(ta~n)~]2+.

Spectroscopic investigations of intermediates in the reaction of cytochrome P450BM3–F87G with surrogate oxygen atom donors☆

“…This is the case at both pH 6.8 and pH 7.4, in contrast to mCPBA, which leads to observable Cpd I formation at pH 7.4. The reaction of iodosobenzene with mammalian P450 isoforms was examined previously by stopped-flow techniques; however, the Cpd ES-like intermediate described in the current work was not detected [10]. We find that the inorganic salt, sodium m-periodate, is also capable of generating the Cpd ES-like intermediate.…”

“…No other oxidant has been successfully employed to directly form significant quantities of this species in solution. Stopped-flow studies of the reactions of rabbit liver microsomal P450s with peroxides, peracids [9], and iodosobenzene [10] have also been reported; however, no transient Cpd I-like intermediates were observed.…”

Epoxidation of olefins by cytochrome P450: Evidence from site-specific mutagenesis for hydroperoxo-iron as an electrophilic oxidant

“…This concept of the oxidant has been derived largely from the well-elucidated chemical properties of peroxidases and of porphyrin biomimetic models, as well as from the requirement for a species capable of oxygen insertion into unactivated carbon-hydrogen bonds (2,3). Efforts by various laboratories to identify the putative ironoxene in P450-catalyzed reactions by spectroscopic means have had partial success (5,6), and recent developments in transient state crystallographic techniques appear to have identified such a species in the reaction cycle of P450cam (7).…”

Kinetics of self-exchange of bis(1,4,7-trithiacyclononane)iron(III)/(II) in acetonitrile and in acidic aqueous solution

“…Measurement of k,, is therefore difficult -too difficult, in fact, for our intended high pressure studies. We believe, however, that it is worthwhile to report here the results of our successful exploratory measurements at atmospheric pressure, made possible through the use of low temperatures, highly acidic conditions (in the case of water as solvent) (8), and the exclusion of light.…”

“…1) and report that they are low-spin. These complexes are of special interest in that the Fe-S bond lengths are actually some 3 pm longer in ~e( [9] (6)(7)(8). Measurement of k,, is therefore difficult -too difficult, in fact, for our intended high pressure studies.…”