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Synthesis, structural characterization and biological studies of neodymium(III) and samarium(III) complexes with mercaptotriazole Schiff bases
Author(s) -
Ain Qurratul,
Pandey Sarvesh Kumar,
Pandey Om Prakash,
Sengupta Soumitra Kumar
Publication year - 2016
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3405
Subject(s) - chemistry , thermogravimetry , samarium , thermal decomposition , schiff base , lanthanide , elemental analysis , aspergillus niger , nuclear chemistry , polymer chemistry , organic chemistry , inorganic chemistry , ion , biochemistry
A series of neodymium(III) and samarium(III) complexes of type [Ln(L)Cl(H 2 O) 3 ] have been synthesized with Schiff bases (LH 2 ) derived from 3‐(phenyl/substituted phenyl)‐4‐amino‐5‐mercapto‐1,2,4‐triazoles and isatin. The structures of the complexes were established using elemental analysis, molar conductivities, magnetic moments, infrared, NMR ( 1 H, 13 C) and UV–visible spectra, X‐ray diffraction and mass spectrometry . The thermal behaviour of these compounds under non‐isothermal conditions was investigated using thermogravimetry and differential thermogravimetry. The intermediates obtained at the end of various thermal decomposition steps were identified from elemental analysis and infrared spectral studies. All the ligands and their complexes were also screened for their antibacterial activity against Staphylococcus aureus and Bacillus subtilis and antifungal activity against Aspergillus niger , Aspergillus flavus and Colletotrichum capsici . The screening results were correlated with the structural features of the compounds. Copyright © 2015 John Wiley & Sons, Ltd.