Design, synthesis and properties of orthopalladated complexes: Proheterogeneous catalyst
authors Das, U; Pattanayak, P; Patra, D; Brandao, P; Felix, V; Chattopadhyay, S
nationality International
journal POLYHEDRON
author keywords Orthopalladation; Crystal structure; Oxidation reaction; Suzuki and Heck reactions; Proheterogeneous catalyst
keywords C COUPLING REACTIONS; PALLADIUM COMPLEXES; LIGANDS; SUZUKI; WATER; REACTIVITY; SUPPORTS; SILICA; COPPER; ACIDS
abstract The reaction of multidentate ligand, 34(E)-(24(E)-4-aryldiazenyl)phenylimino)methypbenzene-1,2-diol, H2L (H2L1, 1a; H2L2, 1b and H2L3, 1c) and (E)-2-((2-(aryldiazenyl)phenylamino)methyl)phenol, HA (HA(1), 3a; HA(2), 3b and HA(3), 3c) [where H represents the dissociable protons upon complexation, and aryl groups of H2L and HA are phenyl for H2L1 and HA(1), p-methylphenyl for H2L2 and HA(2), and p-chlorophenyl for H2L3 and HA(3)], with Na2PdCl4 separately afforded orthometallated complexes [(L)Pd], (2a, 2b and 2c) and [(A)PdCl] (4a, 4b and 4c) respectively. In the case of [(L)Pd], the deprotonated L2- ligands bind palladium (II) in a tetradentate (C,N,N,O) fashion whereas in the case of [(A)PdCl], the deprotonated A(-) ligands bind Pd(II) in tridentate (C,N,N) manner. X-ray structures of [(L-1)Pd], (2a) and [(A(1))PdCl] (4a) were determined to confirm the molecular structures. Both the complexes 4a and 5a exhibited catalytic activity toward Suzuki and Heck reactions. Conversion of [(A)PdCl] to its oxidized form upon ligand oxidation is reported. (C) 2016 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0277-5387
year published 2016
volume 110
beginning page 165
ending page 171
digital object identifier (doi) 10.1016/j.poly.2016.02.024
web of science category Chemistry, Inorganic & Nuclear; Crystallography
subject category Chemistry; Crystallography
unique article identifier WOS:000375518900021
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journal analysis (jcr 2019):
journal impact factor 2.343
5 year journal impact factor 1.894
category normalized journal impact factor percentile 60.363
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