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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(L1–3)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 HL1–3 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)

Thursday, August 06, 2020

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