Initial state and transition state contributions to solvent effects on activation enthalpies for substitution reactions of tris(1,10-phenanthroline)iron(II) in aqueous methanol

Autor:	Damien M. Sweeney, Timothy Digman, John Burgess, Raymond H. Reynolds, John P. McCann, Michael J. Blandamer, Philip P. Duce
Rok vydání:	1983
Předmět:	Aqueous solution Cyanide Inorganic chemistry Metals and Alloys Solvation Aquation Catalysis Inorganic Chemistry chemistry.chemical_compound chemistry Materials Chemistry Hydroxide Methanol Solvent effects
Zdroj:	Transition Metal Chemistry. 8:148-152
ISSN:	1572-901X 0340-4285
DOI:	10.1007/bf00956021
Popis:	Activation enthalpies have been determined for aquation of thetris(1,10-phenanthroline)iron(II) cation and for its reaction with hydroxide in 20, 40, and 80% (by volume) methanol, and for its reaction with cyanide in 20 and 40% methanol. Enthalpies of solution of the chloride salt of this cation, and of potassium cyanide, have been determined in the water-methanol mixtures. From these results and ancillary thermodynamic data we have dissected the variations of activation enthalpies for these three substitution reactions with solvent composition into their initial state and transition state components. In the water-rich mixtures (0 to 40% methanol) initial and transition state solvation effects are similar and dominated by the ligands, but in the reaction with hydroxide in 80% methanol there is a striking difference between initial and transition state behaviour.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dab6357bad34fdeaf483905c2eafd8b2 https://doi.org/10.1007/bf00956021 Zobrazit plný text záznamu Full text from SpringerLink