1036-14-2Relevant articles and documents
Synthesis of a series of new platinum organometallic complexes derived from bidentate Schiff-base ligands and their catalytic activity in the hydrosilylation and dehydrosilylation of styrene
Lachachi, M. Belhadj,Benabdallah, Tayeb,Aguiar, Pedro M.,Youcef, M. Hadj,Whitwood, Adrian C.,Lynam, Jason M.
, p. 11919 - 11928 (2015)
The synthesis and properties of a novel class of platinum complexes containing Schiff bases as O,N-bidentate ligands is described as are the solution and solid state properties of the uncomplexed ligands. The platinum complexes were prepared from [PtBr2(COD)] (COD = 1,5-cyclooctadiene) and N-(2-hydroxy-1-naphthalidene)aniline derivatives in the presence of base (NaOBut). Instead of a substitution reaction to afford cationic species, the addition of the Schiff base ligands results in both the formal loss of two equivalents of bromide and addition of hydroxide to the COD ligand of the complexes. It is proposed that this reaction proceeds through a cationic platinum complex [Pt(N-O)(COD)]Br which then undergoes addition of water and loss of HBr. An example of a dinuclear platinum complex in which two cyclo-octene ligands are bridged by an ether linkage is also reported. The platinum complexes were evaluated as catalysts for the hydrogenative and dehydrogenative silylation of styrene, the resulting behaviour is substituent, time and temperature dependent.
Synthesis, spectroscopic characterization, catalytic and antibacterial studies of ruthenium(III) Schiff base complexes
Shoair,El-Shobaky,Abo-Yassin
, p. 217 - 227 (2015)
The bidentate Schiff base ligands (HLn) have been synthesized by condensation of 2-hydroxy-l-naphthaldehyde with aniline and its p-substituted derivatives in ethanol. Ruthenium(III) complexes of the type [Ru(Ln)2(H2O)2]Cl have been synthesized by the reaction of RuCl3·nH2O with the Schiff base ligands (in a molar ratio 1:2) in ethanol. The ligands and their Ru(III) complexes have been characterized by elemental analysis, magnetic susceptibility, spectroscopic (FTIR, UV-vis, 1H NMR and X-ray diffraction) and thermal analysis techniques. All the ruthenium(III) complexes are found to be stable, paramagnetic, low spin and octahedrally coordinated by the ligands through the nitrogen atom of the azomethine (-CN-) group and the oxygen atom of the deprotonated phenolic group. The molecular and electronic structures of the investigated ligands (HLn) were also studied using quantum chemical calculations. The complexes (1, 3 and 5) exhibited a catalytic activity for the oxidation of benzoin to benzil with moderate to high yield in the presence of sodium periodate as co-oxidant. The antibacterial activities of the ligands (HLn) and their Ru(III) complexes towards Gram positive and Gram negative bacteria have been investigated.
N,O-coordinated bivalent nickel complex with binaphthol structure and preparation method thereof
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Paragraph 0027; 0028; 0029, (2017/08/29)
The invention provides N,O-coordinated bivalent nickel complex with binaphthol structure, having a structural formula shown in the description; the invention also provides a preparation method of the N,O-coordinated bivalent nickel complex with binaphthol