ChemInform Abstract: Ultraviolet Stabilizers of the 2‐(Hydroxyphenyl)benzotriazole Class. Influence of Substituents on Structure and Spectra

Rieker, Jochen; Lemmert‐Schmitt, E.; Goeller, Gernot; Roessler, Manfred; Stueber, G. J.; Schettler, Heike; Kramer, Horst E. A.; Stezowski, John J.; Hoier, Helga; Henkel, S.; Schmidt, A.; Port, H.; Wiechmann, M.; Rody, J.; Rytz, Gerhard; Slongo, Mario; Birbaum, Jean-Luc

doi:10.1002/chin.199313052

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2019

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“…The excited state intramolecular proton transfer mechanism (ESIPT) has been the focus of several experimental and theoretical studies . The planar conformation which is usually maintained by an intramolecular hydrogen bond in the ground state is required.…”

Section: Introductionmentioning

confidence: 99%

Computational, Structural and Spectroscopic Investigations of Two Polymorphs of 5,7‐Dinitro‐8‐(N‐phenylamino)Quinoline

et al. 2019

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Two polymorph modifications of 5,7‐dinitro‐8‐(N‐phenylamino) quinoline (DNPAQ) are isolated in the form of single crystals and studied by experimental and theoretical methods. According to the X‐Ray analysis on single crystals, the two modifications differ by the twist angle between the nitro‐group and the quinoline fragment and the type of molecular packing in the crystals. The theoretical modeling of both polymorphs is performed. The DNPAQ molecular structures of the dimers of neighboring molecules in the polymorphs did not indicate the existence of a significant charge transfer.

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Section: Introductionmentioning

confidence: 99%