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Synthesis, structural and spectroscopic properties of asymmetric schiff bases derived from 2,3-diaminopyridine

Abstract

Two Schiff base derivatives, 4-(2-amino-3-pyridyliminomethyl)phenol (I) and 3-(2-amino-3- pyridyliminomethyl)nitrobenzene (II ), were synthesised and characterised by spectroscopy. The structure of I was determined by single crystal X-ray diffraction studies. The asymmetric Schiff base derived from 2,3-diaminopyridine selectively recognise transition and heavy metal cations, and some anion. Ligands I and II form stable complexes with Cu2+, Zn2+, Pb2+, Al3+ whereas ligand I also binds F− ions. The stoichiometry for the host : cation is 1 : 1 and 2 : 1. The addition of F− ion in CH3CN to ligand I causes a colour change of the solution from colourless to yellow. The binding behaviour of ligand I towards several ions was investigated using density functional theory calculations.

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Copyright (2016 Institute of Chemistry, Slovak Academy of Sciences)

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Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
CHEMICAL PAPERS no. 70, edition 9, pages 4 - 17,
ISSN: 0366-6352
Language:
English
Publication year:
2016
Bibliographic description:
Pazik A., Kamińska B., Skwierawska A., Ponikiewski Ł.: Synthesis, structural and spectroscopic properties of asymmetric schiff bases derived from 2,3-diaminopyridine// CHEMICAL PAPERS. -Vol. 70, iss. 9 (2016), s.4-17
DOI:
Digital Object Identifier (open in new tab) 10.1515/chempap-2016-0058
Verified by:
Gdańsk University of Technology

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