Unusual stabilization of manganese(III) during the cooxidation of dimethylformamide and manganese(II) by chromium(VI)

Z Khan; Kabir-ud-Din

doi:10.1023/A:1011080025654

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Unusual stabilization of manganese(III) during the cooxidation of dimethylformamide and manganese(II) by chromium(VI)

Journal article

Peer reviewed

Unusual stabilization of manganese(III) during the cooxidation of dimethylformamide and manganese(II) by chromium(VI)

Z Khan and Kabir-ud-Din

Transition metal chemistry (Weinheim), Vol.26(4-5), pp.481-486

08/2001

DOI: https://doi.org/10.1023/A:1011080025654

Abstract

Chemistry

Chemistry, Inorganic & Nuclear

Physical Sciences

Science & Technology

The kinetics of the formation and decomposition of Mn-III have been investigated spectrophotometrically in acidic media at 25 degreesC. The complete rate law for Mn-III formation is Cr-VI + DMF + Mn-II (H+) under right arrow Mn-III + CO2 + Me2NH + Cr-III (1) Mn-III + DMF (H+) under right arrow Mn-II + CO2 + Me2NH (2) expressed by k(obs1) = k(1)k(1)'K-a1[H+][DMFH+][Mn-II]/{1 + K-a1[H+]}. Mn-III reduction by DMF follows the rate law k(obs2) = k(2)K(h)[DMF][H+](2)/{[H+] + K-h}. The above results are accounted for by a mechanism involving the intermediacy of Cr-IV.

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Title: Unusual stabilization of manganese(III) during the cooxidation of dimethylformamide and manganese(II) by chromium(VI)
Creators - without role: Z Khan - Jamia Millia Islamia
Kabir-ud-Din - Jamia Millia Islamia
Publication Details: Transition metal chemistry (Weinheim), Vol.26(4-5), pp.481-486
Publisher: KLUWER ACADEMIC PUBL
Number of pages: 6
Identifiers: 9939067708331
Academic Unit: King Abdulaziz University
Language: English
Resource Type: Journal article