Isomeric forms of tris-Schiff base complexes of iron(II): structure of the complex derived from 2-acetyl pyridine and methylamine

Kinetics and mechanism of formation of manganate(VI) and hypomanganate(V) coordination polymer intermediates during the base‐catalyzed oxidation of carboxymethyl cellulose polymer by permanganate, Part 1

“…Unfortunately it has been impossible to isolate these stereoisomeric forms by the different preparations as they are short-lived intermediates. Similar evidence for the existence of such isomers was observed by spectrophotometric rate measurements of acid and base hydrolysis of some aryl ketoimines complexes elsewhere [18][19][20][21]. An analysis of the spectrophotometrically measured two-stage first-order rate of the formation of the intermediate [CMC MnO 4 2− ] complex (in Fig.…”

Base-Catalyzed Oxidation of Carboxymethyl-cellulose Polymer by Permanganate

“…Unfortunately, it has been impossible to isolate these stereoisomeric forms by the different preparations, evidently because they are very short-lived intermediates. Evidence was observed for the existence of these isomers by spectrophotometric rate measurements of acid and base hydrolysis of some aryl ketoimines complexes, as discussed elsewhere (21)(22)(23)(24). In a recent contribution, analysis of the two-stage, first-order rate of formation of the intermediate (CMC-MnO 2− 4 ) complex (Fig.…”

Salt effects on the reactivity of the base‐catalyzed hydrolysis of some novel low‐spin hydrophobic Fe(II)–amino acid azomethine chelates

“…2). The two-stage kinetics obtained from these plots was explained as due to the presence of the convenient labile cis and inert trans isomers of the octahedral structures [9] (Fig. 2).…”