Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Quality Control of 2,5-Dimethyl-2,5-hexanediol, 110-03-2, Name is 2,5-Dimethyl-2,5-hexanediol, molecular formula is C8H18O2, belongs to pyridazines compound. In a document, author is El Guesmi, Nizar, introduce the new discover.
Photochromism of Dihydroindolizines. Part XXI: Multiaddressable Photochromic Performances based on Pyrrolo[1,2-b]pyridazine photochromes: Kinetics, Substituent Effect and Solvatochromism
In the present study, the thermal 1,5-electrocyclization back reaction from betaines (colored forms) to dihydroindolizines (DHIs, colorless) was studied in seven organic solvents with different polarities at various temperatures. The spectroscopic, thermodynamic and photochromic properties of such photo and solvatochromic material based on betaines/DHIs is investigated. It is obvious that the rate of the thermal back reaction depend on solvent polarity. Exploration of the activation parameters unravel an underlying compensation between Delta H-not equal and Delta S-not equal. The 1,5-electrocylization decoloration reaction is found to follow two-step mechanism, the first step corresponds to the transoid-cisoid isomerization and the second one is the ring closure from the cisoid intermediate and formation of the carbon-carbon bond to form the initial Spiro isomer. The special solvent effects were discussed based on the linear free energy relationship. The solvatochromism of the dihydroindolizines (DHIs) was studied and analyzed by means of the empirical Kamlet-Taft and Catalan solvent parameter set. The obtained results suggest that the change of polarizability within the solvents is the major factor for the observed solvent dependence. (C) 2017 Elsevier B.V. All rights reserved.
A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 110-03-2. Quality Control of 2,5-Dimethyl-2,5-hexanediol.
Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem