ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Formation of coordination compounds with aniline in the interlayer space of Ca2+-, Cu2+- and Fe3+-exchanged montmorillonite

Veronika Janíková, Eugen Jóna, Róbert Janík, Viliam Pavlík, Darina Ondrušová, and Michaela Ďurčeková

Department of Material Technologies and Environment, Faculty of Industrial Technologies, Alexander Dubček University of Trenčín, I. Krasku 491/30, 020 01 Púchov, Slovakia

E-mail: i.janikova.v@gmail.com

Abstract: The influence of Ca²⁺-, Cu²⁺- and Fe³⁺-exchanged montmorillonite (MMT) on the type of interaction with aniline in the interlayer space of MMT has been studied by means of X-ray powder diffraction and infrared spectra. Results of X-ray diffraction showed that aniline was successfully intercalated into the interlayer space of MMT. Based on IR spectra evaluation, aniline was indirectly coordinated through a water-bridge in Ca²⁺- and Fe³⁺-MMT and it was indirectly coordinated through a water-bridge as well as protonated in Cu²⁺-MMT (the spectrum of protonated aniline showed deformation and changes in the NH⁺³ absorption at approximately 1521 cm⁻¹). It is important to point out that Cu²⁺-MMT indirect coordination and protonation occur simultaneously.

Keywords: montmorillonite – aniline – XRD powder diffraction – IR spectroscopy

Full paper is available at www.springerlink.com.

DOI: 10.1515/chempap-2015-0196

Chemical Papers 70 (1) 131–134 (2016)