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- W2021263908 abstract "The photochromic and thermochromic properties in various classes of the Sciff bases of salicylaldehydes with anilines, aminopyridines or benzylamines were investigated in the crystalline state and in rigid glasses at various temperatures. The reaction involved is an intramolecular hydrogen transfer where the enol-keto tautomeric species are in equilibrium. In all the series studied, the salicylaldimino group that takes part in the reaction has the same geometry in the crystalline state: a strong intramolecular hydrogen bond that “locks” it in the planar configuration. It is suggested that what determines thermochromic or photochromic behaviour is not planarity or non planarity of the molecules respectively, but rather the electron density of the lone pair of the imino nitrogen atom." @default.
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- W2021263908 date "1987-01-01" @default.
- W2021263908 modified "2023-10-11" @default.
- W2021263908 title "Photochromism and thermochromism of schiff bases in the solid state and in rigid glasses" @default.
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- W2021263908 doi "https://doi.org/10.1016/s0040-4020(01)90255-8" @default.
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