KINETICS AND MECHANISM OF REACTION OF SULFUR(IV) WITH PYRUVATO (PENTAAMMINE) COBALT(III)

Authors
DASH AC PATNAIK AK DAS N
Citation
Ac. Dash et al., KINETICS AND MECHANISM OF REACTION OF SULFUR(IV) WITH PYRUVATO (PENTAAMMINE) COBALT(III), Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 37(7), 1998, pp. 592-595
Citations number
21
Categorie Soggetti
Chemistry
Journal title
Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical
ISSN journal
03764710 → ACNP
Volume
37
Issue
7
Year of publication
1998
Pages
592 - 595
Database
ISI
SICI code
0376-4710(1998)37:7<592:KAMORO>2.0.ZU;2-I
Abstract
The reaction of S(IV) with pyruvato(pentaammine)cobalt(III) has been s tudied in the range of pH (3.2 - 6.5) and temperatures (15 - 30 degree s C). There is no evidence of substitution of bound carboxylate by sul phite. However, the keto form of the pyruvato complex reacts with HSO3 - and SO32- yielding the S(IV) addition product, (NH3)(5)CoO2CC(SO3)(O H)CH3. The rate constants and activation parameters for both HSO3- (an d SO)(2-)(3) reaction paths are reported. The pyruvato complex and als o its sulphite addition product do not undergo reduction of cobalt(III ) centre by sulphite.