Inorganica Chimica Acta
Inorganica Chimica Acta
5 years ago

Syntheses and characterization of mononuclear Zn(II), Cd(II) and Hg(II) complexes of 2-[(3,5-dibromo-2-hydroxy-benzylidene)-amino]-2-hydroxymethyl-propane-1,3-diol: Photoluminescence properties and DFT study

Syntheses and characterization of mononuclear Zn(II), Cd(II) and Hg(II) complexes of 2-[(3,5-dibromo-2-hydroxy-benzylidene)-amino]-2-hydroxymethyl-propane-1,3-diol: Photoluminescence properties and DFT study
A new Schiff-base ligand HL ((2-[(3,5-dibromo-2-hydroxy-benzylidene)-amino]-2-hydroxymethyl-propane-1,3-diol)) was obtained by the 1:1 condensation of 1,3-dibromo salicylaldehyde and (tris hydroxy methyl) amino methane. Then three new complexes, [Zn(L) 2 ], [Cd(L) 2 ] and [Hg(L) 2 ], have been prepared by the reaction of zinc(II), cadmium(II) and mercury(II) chlorides with the ligand and characterized by routine physicochemical techniques. Complex 1 has further been characterized by single crystal X-ray structural analyses. The ligands, as well as all three complexes, are highly fluorescent. For the ligand, the emission band is attributed to a π → π∗ transition, whereas for the complexes the emissions may be assigned to ligand-to-metal charge transfers (LMCT). DFT calculation of all the three complexes has also been done.

Publisher URL: www.sciencedirect.com/science

DOI: S0020169317309799

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