Initial state and transition state solvation effects in the cobaltitungstate oxidation of iodide in binary aqueous solvent mixtures

1982 ◽  
Vol 7 (1) ◽  
pp. 10-13 ◽  
Author(s):  
Michael J. Blandamer ◽  
John Burgess ◽  
Philip P. Duce ◽  
Robert I. Haines ◽  
Alexander McAuley
Keyword(s):  
Transition State ◽  
Solvent Mixtures ◽  
Initial State ◽  
Solvation Effects ◽  
Aqueous Solvent Mixtures ◽  
Aqueous Solvent

scholarly journals Initial state and transition state solvation effects in the oxidation of iodide and catechol by hexachloroiridate(IV) in binary aqueous solvent mixtures

1983 ◽  
Vol 61 (7) ◽  
pp. 1361-1370 ◽  
Author(s):  
Michael J. Blandamer ◽  
John Burgess ◽  
Stephen J. Hamshere ◽  
Colin White ◽  
Robert I. Haines ◽  
...  
Keyword(s):  
Transition State ◽  
State Transition ◽  
Butyl Alcohol ◽  
Activation Process ◽  
Solvent Mixtures ◽  
Redox Systems ◽  
Initial State ◽  
Water Solvent ◽  
Aqueous Solvent ◽  
And Diffusion

Rate constants are reported for hexachloroiridate(IV) oxidation of iodide in methanol–, ethanol–, t-butyl alcohol–, ethylene glycol–, glycerol–, acetone–, acetonitrile–, and dimethyl sulphoxide – water solvent mixtures, and for the hexachloroiridate(IV) oxidation of catechol in methanol–water mixtures. With the aid of ancillary solubility data and measurements, solvent effects on reactivity have been analysed into initial state and transition state components. In the latter, there are probably both electron transfer and diffusion contributions since it is not possible to identify uniquely the separate kinetic steps associated with the activation process. In these redox systems, however, transition state solvation changes dominate. This conclusion is compared with initial state – transition state effects in the reaction of catechol with hexahydroxoantimonic acid, in the bromate oxidation of bromide, the peroxodisulphate oxidation of iodide, and with patterns established earlier for substitution at inorganic centres. In view of some disagreements and uncertainties in the literature concerning the number of molecules of water of crystallisation in potassium hexachloroiridate(III) and hexachloroiridate(IV), this matter, of considerable importance to hexachloroiridate transfer parameter estimation, is briefly reviewed.

Self-assembly of sodium and potassium betulinates into hydro- and organo-gels: entrapment and removal studies of fluorophores and synthesis of gel–gold nanoparticle hybrid materials

RSC Advances ◽  
2016 ◽  
Vol 6 (21) ◽  
pp. 17290-17296 ◽  
Author(s):  
Braja Gopal Bag ◽  
Shib Shankar Dash
Keyword(s):  
Gold Nanoparticle ◽  
Hybrid Materials ◽  
Betulinic Acid ◽  
Self Assembly ◽  
Solvent Mixtures ◽  
Potassium Salts ◽  
Aqueous Solvent Mixtures ◽  
Aqueous Solvent ◽  
Removal Studies ◽  
Sodium And Potassium

Sodium and potassium salts of a renewable nano-sized triterpenoid betulinic acid have been prepared and their self-assembly properties in water and aqueous solvent mixtures have been studied.

A direct carbon-13 and nitrogen-15 NMR study of samarium(III) complexation with nitrate and isothiocyanate in aqueous solvent mixtures

1994 ◽  
Vol 23 (9) ◽  
pp. 1019-1047 ◽  
Author(s):  
A. Fratiello ◽  
V. Kubo-Anderson ◽  
E. Bolanos ◽  
O. Chavez ◽  
F. Laghaei ◽  
...  
Keyword(s):  
Solvent Mixtures ◽  
Aqueous Solvent Mixtures ◽  
Nmr Study ◽  
Aqueous Solvent

Substitution of azide atNNN?N?-tetraethyldiethylenetriaminechlorogold-(III) in binary aqueous solvent mixtures

1979 ◽  
Vol 4 (3) ◽  
pp. 161-163 ◽  
Author(s):  
Michael J. Blandamer ◽  
John Burgess ◽  
Stephen J. Hamshere ◽  
Paul Wellings
Keyword(s):  
Solvent Mixtures ◽  
Aqueous Solvent Mixtures ◽  
Aqueous Solvent
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