caa a22 4500 465775594 CHVBK 20180323111941.0 cr unu---uuuuu 170327e19900601xx s 000 0 eng 10.1007/BF01038374 doi (NATIONALLICENCE)springer-10.1007/BF01038374 Mechanism of oxidation of selenium(IV) by cobalt(III) in perchloric acid — a kinetic study [Elektronische Daten] [Sridevi Nadimpalli, Rambabu Rallabandi, Dikshitulu Lanka] Summary: The kinetics of CoIII oxidation of SeIV have been studied in aqueous HClO4. The order with respect to Com is two the order with respect to SeIV is one at low concentrations; two at high concentrations. The latter variation is attributed to the greater reactivity of the SeIV dimier A mechanism involving complexation between oxidant and substrate is proposed. [CoOH]2+ is presumed to be the reactive CoIII species and H2SeO3 and HSeO 3 − to be those of SeIV. At 25° C, Ea, ΔH‡ and ΔS‡ for the monomeric path are 125.6±4.0 kJ mol−1, 122.1±3.8 kJ mol−1 and 206±12 JK−1 mol−1 respectively and those for the dimeric path are 88.6±3.6 kJ mol−1, 85.9±3.4 kJ mol−1 and 62.6±11.3 JK−1 mol−1 respectively. Chapman and Hall Ltd., 1990 Nadimpalli Sridevi Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, 530 003, Visakhapatnam, India aut Rallabandi Rambabu Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, 530 003, Visakhapatnam, India aut Lanka Dikshitulu Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, 530 003, Visakhapatnam, India aut Transition Metal Chemistry Kluwer Academic Publishers 15/3(1990-06-01), 191-196 0340-4285 15:3<191 1990 15 11243 https://doi.org/10.1007/BF01038374 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01038374 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nadimpalli Sridevi Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, 530 003, Visakhapatnam, India aut NATIONALLICENCE 700 1- Rallabandi Rambabu Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, 530 003, Visakhapatnam, India aut NATIONALLICENCE 700 1- Lanka Dikshitulu Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, 530 003, Visakhapatnam, India aut NATIONALLICENCE 773 0- Transition Metal Chemistry Kluwer Academic Publishers 15/3(1990-06-01), 191-196 0340-4285 15:3<191 1990 15 11243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer