Abstract
Palladium is arguably the most versatile and most widely applied catalytic metal in the field of fine chemicals due to its high selectivity and activity. Palladium catalyst offers an abundance of possibilities of carbon-carbon bond formation in organic synthesis. In this research, three different Schiff base ligands have been prepared by condensation reaction between appropriate aldehyde or ketone with amine namely 2,2-dimethyl-1,3-propanediamine in the molar ratio of 2:1. The corresponding palladium (II) Schiff base complexes were prepared through the reaction between the Schiff base ligand with palladium (II) acetate in a molar ratio 1:1. FTIR, 1H-NMR and 13C-NMR spectroscopic data revealed that the ligands are N,N,O,O-tetradentate coordinated to the Pd atom through both the azomethine N atoms and phenolic O atoms. From X-ray Crystallographic analysis, it showed that the complex exists as square planar geometry. The synthesized palladium (II) Schiff base complexes were then subjected in catalytic Heck and Suzuki reaction of iodobenzene.
Highlights
Tetradentate Schiff base is one of the most extensively studied ligands in coordination chemistry
The synthesized palladium (II) Schiff base complexes were subjected to Heck and Suzuki reactions in order to evaluate the activity of the catalyst
The synthesized palladium (II) complexes were subjected in the catalytic Heck reaction of iodobenzene and methyl acrylate by using DMA solve + nt
Summary
Tetradentate Schiff base is one of the most extensively studied ligands in coordination chemistry They can coordinate with a large number of transition metals, as well as possessing numerous interesting properties to related catalysis and electrochemistry. One type of tetradentate Schiff base ligand is N,N,O,O-tetradentate donor set which possesses many advantages such as facile approach, relative tolerance, readily adjusted ancillary ligands, and tuneable steric and electronic coordination environments on the metal center [1,2]. They can be synthesized both and cheaply in a bulk amount which properties that become very important when industrial applications are being sought. The synthesized palladium (II) Schiff base complexes were subjected to Heck and Suzuki reactions in order to evaluate the activity of the catalyst
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