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

Influence of the nature of the substituent in 3-(2-pyridyl)-1,2,4-triazole for complexation with Pd²⁺

Borys V. Zakharchenko, Dmytro M. Khomenko, Roman O. Doroshchuk, Olga V. Severynovska, Ilona V. Raspertova, Victoria S. Starova, and Rostyslav D. Lampeka

Department of Chemistry, Taras Shevchenko National University of Kyiv, Kiev, Ukraine

E-mail: dkhomenko@ukr.net

Abstract: The structure of four new palladium complexes [Pd(HL²)Cl₂ and Pd(L^1–3)₂] with 3-(2-pyridyl)-5-R-1,2,4-triazoles (R=H, CH₃, Ph respectively HL¹, HL², HL³) was proposed based on IR, NMR, UV spectroscopy and MALDI mass spectrometry data analysis. It is found that the complexation of HL² and HL³ with Pd²⁺ ions results in a decrease of their fluorescence intensity and it is vice versa in case of HL¹. Furthermore, the influence of the substituent (R) in the 3-(2-pirydyl)-5-R-1,2,4-triazoles on the fluorescent and protolytic properties of HL^1–3 was investigated.

Keywords: Palladium; 1,2,4-Triazole; Fluorescent properties; NMR spectroscopy

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-017-0194-8

Chemical Papers 71 (10) 2003–2009 (2017)