Photochromic complexes based on enantiomeric 2-(4-pyridyl)-4, 5-dihydrothiazole-4-carboxylic acids

Autor:	Ling-ling Li, Xia-li Zhou, Mouhai Shu, Abaid Ullah Malik, Xiao-li Bao
Rok vydání:	2018
Předmět:	010405 organic chemistry Chemistry 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry Photochromism Enantiopure drug Polymer chemistry Materials Chemistry Irradiation Physical and Theoretical Chemistry Enantiomer Single crystal
Zdroj:	Polyhedron. 141:105-109
ISSN:	0277-5387
DOI:	10.1016/j.poly.2017.11.033
Popis:	New enantiopure ligands, (R)-/(S)-2-(4-pyridyl)-4,5-dihydrothiazole-4-carboxylic acids (HLR, HLS) were synthesized, subsequently their reactions with Cd(ClO4)2·6H2O resulted in the formation of complexes [CdLR2(H2O)2]·3H2O (1R) and [CdLS2(H2O)2]·3H2O (1S). The structure of 1R was determined by single crystal X-ray diffraction analysis. The complexes show instant colour change upon irradiation with UV light. The photochromic mechanism is investigated by ESR and UV-Vis spectroscopic techniques. The results indicate that the photochromic transformation is originated from the formation of the free radical.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1f795cbd6144d997fa678d3b1dee6ceb https://doi.org/10.1016/j.poly.2017.11.033 Zobrazit plný text záznamu Full Text from ScienceDirect