title: Solvatochromic and Single Crystal Studies of Two Neutral Triarylmethane Dyes with a Quinone Methide Structure.
abstract: The crystal structure of two neutral triarylmethane dyes with a p-quinone methide core was determined by X-ray diffraction analysis. The spectroscopic characteristics of both compounds in 23 solvents with different polarities or hydrogen-bonding donor (HBD) abilities has been studied as a function of three solvatochromic parameters (ET(30), π* and α). Both compounds 1 and 2 showed a pronounced bathochromic shift of the main absorption band on increasing solvent polarity and HBD ability. The correlation is better for compound 2 than for compound 1. The stronger effect and better correlation was observed for compound 2 with the increment of the solvent HBD ability (α parameter).
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat de València-Universidad Politécnica de Valencia, Dr. Moliner, 50, 46100-Burjassot, Valencia, Spain. katherine.chulvi@uv.es.
authors.forename: Katherine
authors.initials: K
authors.lastname: Chulvi
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat de València-Universidad Politécnica de Valencia, Dr. Moliner, 50, 46100-Burjassot, Valencia, Spain. ana.costero@uv.es.
authors.forename: Ana M
authors.initials: AM
authors.lastname: Costero
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat de València-Universidad Politécnica de Valencia, Dr. Moliner, 50, 46100-Burjassot, Valencia, Spain. luis.e.ochando@uv.es.
authors.forename: Luis E
authors.initials: LE
authors.lastname: Ochando
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat de València-Universidad Politécnica de Valencia, Dr. Moliner, 50, 46100-Burjassot, Valencia, Spain. salvador.gil@uv.es.
authors.forename: Salvador
authors.initials: S
authors.lastname: Gil
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat de València-Universidad Politécnica de Valencia, Dr. Moliner, 50, 46100-Burjassot, Valencia, Spain. jvivanco@dpi.upv.es.
authors.forename: José-Luis
authors.initials: JL
authors.lastname: Vivancos
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat de València-Universidad Politécnica de Valencia, Dr. Moliner, 50, 46100-Burjassot, Valencia, Spain. pablo.gavina@uv.es.
authors.forename: Pablo
authors.initials: P
authors.lastname: Gaviña
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D045563:Indolequinones / Q000737:chemistry*; D008697:Methane / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry*; D008956:Models, Chemical; D015394:Molecular Structure; D014961:X-Ray Diffraction
chemical_list: D004396:Coloring Agents; D045563:Indolequinones; C068040:quinone methide; D008697:Methane
keywords: crystal structure; solvatochromic studies; triarylmethane dyes