Lopez, Rosana published the artcileThe apparent dipole moments and molar volumes of 1,3-benzothiazole and some derivatives, in nonpolar solvents, Recommanded Product: 2-(4-Aminophenyl)-6-methylbenzothiazole, the publication is Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1999), 2225-2229, database is CAplus.
The apparent mol. polarizations at infinite dilution, P2∞, mol. refractions, RD, dipole moments, μ2, polarizabilities, α, partial molar volumes, V 02,m, of 1,3-benzothiazole and some derivatives at position 2 or 3, were determined from relative permittivity, d. and refractive index measurements in n-hexane or 1,4-dioxane solutions at 25°. The RD and V 02,m values correlate well for all substances studied, independently of the solvent used. The P2∞ values appear to be slightly dependent on the solvent showing the presence of specific interactions as H bond. The apparent relative permittivity, ε2‘, and the refraction index extrapolated at the IR region, nIR, were estimated for all solutes. In the case of 1,3-benzothiazole and its 2-Me derivative, these results were compared with the relative permittivities measured at 25° at low and high frequencies, resp., by the Cole-Cole dynamic method, showing a good agreement. The apparent dipole moments and their changes with the corresponding substituent group were determined by 3 different methods. From the measurement of dipole moment it was unambiguously established that the tautomeric equilibrium between 2-mercapto-1,3-benzothiazole and 2-thioxo-3H-1,3-benzothiazole is strongly displaced to the latter. Changes in the apparent molar solution volumes and apparent molar polarizations of the solutes in the considered solvents are qual. discussed. Comparison between pKa values reported in the literature and the corresponding μ values for free base benzothiazole derivatives were carried out as well as the appropriate qual. discussion.
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry published new progress about 92-36-4. 92-36-4 belongs to thiazole, auxiliary class Organic Pigment, name is 2-(4-Aminophenyl)-6-methylbenzothiazole, and the molecular formula is C14H12N2S, Recommanded Product: 2-(4-Aminophenyl)-6-methylbenzothiazole.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica