Cr²⁺and V²⁺reductions of the µ-amido-µ-formato-bis[tetra-amminecobalt(III)] and µ-amido-µ-acetato-bis[tetra-amminecobalt(III)] complexes

Titanium(III) reductions of binuclear and tetranuclear .mu.-carboxylato cobalt(III)-ammine complexes. Evidence for remote attack of titanium(III) at an unprotonated carboxylate

“…Reactions were followed for 5 half-lives. Absorbance changes at 524 nm were in good agreement with calculated values for complete reduction of two Co(III) atoms (complexes 1-6) or four Co(III) atoms (7)(8)(9), respectively, and show the reductions of the first Co(III) atom of each complex to be the rate-determining step. In all cases only a single stage of the reaction was observed (decrease in absorbance).…”

“…Again a reasonably linear correlation is defined. log ^tíoh = (°.57 ± 0.1) log kCl + (0.35 ± 0.1) (8) Interestingly, the slope of the latter correlation is ca, 0,5 which appears to be characteristic for log-log plots involving TiOH2+ as a reductant3 (a slope of unity for the corresponding log £v-log kCr correlation has been reported: log ky = 1.02 log kCt + 1.7322,25).…”

Kinetics and mechanism of oxidation of tris-(1,10-phenanthroline)iron(II) by chlorine and bromine and of the reduction of tris-(1,10-phenanthroline)iron(III) by iodide ions

“…Sodium iodide, sodium bromide, and lithium chloride which were the sources of the anions were Analar grade reagents. Lithium perchlorate, used to maintain the ionic strength at 1.0 mol was prepared from Analar lithium carbonate and perchloric acid, and recrystallised thrice, by the usual method (26).…”

Kinetics and mechanism of the formation of organochromium(III) complexes in the reactions of organic peroxides with chromium(II)

“…The question of which oxygen atom is attacked in the former reaction for X = carboxylate has never been settled by direct experiment, although indirect but seemingly convincing arguments have been advanced for attack at the carbonyl oxygen. 49 Similarly, we are unable to say whether Cr2+ attack on tert-butyl perbenzoate, which is definitely an inner-sphere process in view of the formation of CrC^CCeHs2*, occurs via carbonyl or peroxidic oxygen.50…”