Journal
INORGANIC AND NANO-METAL CHEMISTRY
Volume 50, Issue 9, Pages 872-879Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/24701556.2020.1727515
Keywords
Organotin; antibacterial activity; Schiff base; fluorescence; crystal structure
Funding
- Undergraduate Innovation Project of Qufu Normal University [2018A045]
- Shandong Provincial Natural Science Foundation, China [ZR2013BM007]
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Four new diorganotin complexes of Schiff base derived from 4-(diethylamino)salicylaldehyde and L-tyrosine, R2Sn[2-O-4-Et2NC6H3CH=NCH(CH2C6H4OH-4)COO] (R = Me (1), Et (2), Cy (3), Ph (4)), were synthesized by the one-pot reaction of L-tyrosine, 4-(diethylamino)salicylaldehyde and diorganotin dichloride in the presence of triethylamine and characterized by means of elemental analysis, IR, H-1 and C-13 NMR spectra, and the X-ray single-crystal diffraction. X-Ray analyses of 1-4 revealed that the tin atoms of the complexes exhibit seriously distorted trigonal-bipyramidal geometries with a monodentate carboxylate oxygen atom and a phenolic oxygen atom occupying the axial positions. The intermolecular O & x2500;H...O hydrogen bonds and Sn...O weak interactions connected the molecules into one-dimensional supramolecular chain. Bioassay results indicated that 1-4 had moderate antibacterial activity against Escherichia coli and the fluorescence determinations show the complexes may be explored for potential luminescent materials.
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