Solvent-free Mechanosynthesis of Two Thermochromic Schiff Bases

Kaitner, Branko and Zbačnik, Marija (2012) Solvent-free Mechanosynthesis of Two Thermochromic Schiff Bases. Acta Chimica Slovenica, 59. pp. 670-679. ISSN 1580-3155

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Abstract

Two thermochromic Schiff bases mostly in keto-amine tautomeric form were obtained by means of mechanochemical synthesis. Both Schiff bases Compound 1 and Compound 2, respectively are derived from the same primary amine 2- amino-5-methylphenol. Salicylaldehyde was used as aldehyde component in preparation of 1, and o-vanillin as substituted salicylaldehyde component in synthesis of 2. Powder products of the neat grinding and liquid-assisted grinding syntheses of 1 and 2 were compared with the crystalline products, obtained by recrystallization from a small amount of solvent. Both raw powder and recrystallized products were characterized and compared by means of PXRD, DSC and IR.

Item Type: Article
Keywords: solvent-free mechanosynthesis; Schiff bases; keto-enol tautomerism; thermochromism; crystal structure
Date: 2012
Subjects: NATURAL SCIENCES > Chemistry
Divisions: Faculty of Science > Department of Chemistry
Publisher: Slovenian Chemical Society
Depositing User: mag. bibl. Ana Šafran
Date Deposited: 06 Jun 2014 12:28
Last Modified: 06 Jun 2014 12:28
URI: http://digre.pmf.unizg.hr/id/eprint/2290

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