Authors:A. Santana, A. Mauro, H. Zorel, M. Mattioli, and V. de Lucca Neto
The dimeric compound [Pd(bzan)(μ-OOCCH3)]2 (1) (bzan=N-benzylideneaniline) reacts with KX, in methanol/acetone (2:1), affording the analogous dimeric pseudohalogen-bridged species
[Pd(bzan)(μ-X)]2 [X=NCO(2),SCN(3), CN(4)]. The compounds were characterized by elemental analysis, infrared spectroscopy, NMR and thermogravimetric
analysis. IR data for 2–4 showed bands typical of coordinated pseudohalogen ligands clearly indicating the occurrence of the
exchange reaction. Their thermal behaviour was investigated and suggested that their stability is influenced by the bridging
ligand. The thermal stability decreased in the order[Pd(bzan)(μ-CN)]2>[Pd(bzan)(μ-SCN)]2>[Pd(bzan)(μ-OOCCH3)]2>[Pd(bzan)(μ-NCO)]2. X-ray results showed the formation of Pd as final decomposition product.
Authors:Alessandra Stevanato, Antonio Mauro, and Adelino Netto
Synthesis, spectroscopic characterization and thermal analysis of the [Pd(dmba)(Cl)(iso)] (1), [Pd(dmba)(NCO)(iso)] (2), [Pd(dmba)(N3)(iso)] (3) and [Pd(dmba)(Br)(iso)] (4) (dmba = N,N′-dimethylbenzylamine; iso = isonicotinamide) compounds are described in this work. The complexes were investigated by infrared
spectroscopy (IR), differential thermal analysis (DTA) and thermogravimetry (TG) and the residues of the thermal decomposition
were identified as Pdo by X-ray powder diffraction. The thermal stability order of the complexes varied as [Pd(dmba)(Cl)(iso)] (1) > [Pd(dmba)(Br)(iso)] (4) > [Pd(dmba)(NCO)(iso)] (2) > [Pd(dmba)(N3)(iso)] (3).
Authors:E. T. de Almeida, A. M. Santana, A. V. G. Netto, Claudia Torres, and A. E. Mauro
The synthesis, characterization and thermal analysis of the novel cyclometallated compounds [Pd2(dmba)2Cl2(μ-bpe)] (1), [Pd2(dmba)2(N3)2(μ-bpe)] (2), [Pd2(dmba)2(NCO)2(μ-bpe)] (3), [Pd2(dmba)2(SCN)2(μ-bpe)] (4), [Pd2(dmba)2(NO3)2(μ-bpe)] (5) (bpe=trans-1,2-bis(4-pyridyl)ethylene; dmba=N,N-dimethylbenzylamine) are described. The thermal stability of [Pd2(dmba)2X2(μ-bpe)] complexes varies in the sequence 1>4>3>2>5. The final residues of the thermal decompositions were characterized as metallic palladium by X-ray powder diffraction.
Authors:V. Lucca Neto, A. Mauro, A. Netto, A. Moro, and V. Nogueira
The cyanate-bridged cyclopalladated compound [Pd(C2,N-dmba)(μ-NCO)]2 (dmba=N,N-dimethylbenzylamine) reacts in acetone with pyrazole (pz), 3,5-dimethylpyrazole (dmpz), imidazole (imz) and 2-methylimidazole
(mimz) to give [Pd2(C2,N-dmba)2(μ-NCO)(μ-pz)] (1), [Pd2(C2,N-dmba)2(μ-NCO)(μ-dmpz)] (2), [Pd(C2,N-dmba)(NCO)(imz)] (3) and [Pd(C2,N-dmba)(NCO)(mimz)] (4), respectively. The compounds were characterized by elemental analysis, IR spectroscopy and TG. The thermal decomposition
of the compounds occurs in three consecutive steps and the final decomposition products were identified as Pd(0) by X-ray
powder diffraction. The thermal stability order of the complexes is 2>3>1>4.
Authors:Sahra C. Lemos, Silmar J. S. Franchi, Adelino V. G. Netto, Antonio E. Mauro, Oswaldo Treu-Filho, Regina C. G. Frem, Eduardo Tonon de Almeida, and Cláudia Torres
Cyclopalladated complexes represent an important branch in modern organometallic chemistry since they play important roles not only in organic synthesis [ 1 ], photochemistry [ 2 ], and homogeneous catalysis [ 3
Authors:Francisco C. C. Arantes, Antonio C. Moro, Iolanda S. Klein, Cristiana da Silva, Adelino V. G. Netto, Antonio E. Mauro, and Vânia M. Nogueira
Moro , AC , Mauro , AE , Netto , AVG , Ananias , SR , Quilles , MB , Carlos , IZ et al. 2009 Antitumor and antimycobacterial activities of cyclopalladated complexes: X-ray structure of [Pd(C2, N