Search results for "solvent influence on activation energy"

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Density Functional Theory Study of the Trans-Trans-Cis (TTC)→Trans-Trans-Trans (TTT) Isomerization of a Photochromic Spiropyran Merocyanine

2008

Density Functional Theory (DFT) calculations have been performed on the TTC→TTT isomerization reaction of the open forms of the 1',3'-dihydro-8-bromo-6-nitro- 1',3',3'-trimethylspiro[2H-1-benzopyran-2,2'-(2H)indole (8-Br-6-nitro-BIPS) system. The calculations were carried out in vacuo and in methylene chloride solution at different temperatures. Results are compared with the available experimental values of free energy difference and activation energy in solution.

Models MolecularIndolesVacuumSpiropyran; photochromism; DFT calculation; solvent influence on activation energy; merocyanine.merocyaninesolvent influence on activation energyPharmaceutical ScienceDFT calculationPyrimidinonesPhotochemistryArticleAnalytical Chemistrylcsh:QD241-441Photochromismchemistry.chemical_compoundlcsh:Organic chemistryDrug DiscoveryBenzopyransMerocyaninePhysical and Theoretical ChemistryMethyleneFluorescent DyesIndole testSpiropyranMethylene ChlorideOrganic ChemistryStereoisomerismModels TheoreticalNitro CompoundsphotochromismSolutionschemistrymerocyanine.Chemistry (miscellaneous)ThermodynamicsMolecular MedicineDensity functional theorySpiropyranIsomerizationCis–trans isomerismMolecules
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