Abstract
The Schiff base bis(4-ethylbenzyl) p-phenylenediimine, 4-eb-p-phen (1), and six new dimeric Pd(II) complexes of the type [Pd(μ-X)(4-eb-p-phen)]2 {X = Cl (2), Br (3), I (4), N3 (5), NCO (6), SCN (7)} have been synthesized and characterized by elemental analysis, IR spectroscopy, and 1H and 13C{1H}-NMR experiments. The thermal behavior of the complexes 2–7 has been investigated by means of thermogravimetry and differential thermal analysis. From the final decomposition temperatures, the thermal stability of the complexes can be ordered in the following sequence: 3 > 4 > 7 > 2 ≈ 5 > 6. The final products of the thermal decompositions were characterized as metallic palladium by X-ray powder diffraction (XRD).
Similar content being viewed by others
References
Treu Filho O, Pinheiro JC, da Costa EB, Ferreira JEV, Figueiredo AF, Kondo RT, Lucca Neto VA, Souza RA, Legendre AO, Mauro AE. Experimental and theoretical study of the compound [Pd(dmba)(NCO)(imz)]. J Mol Struct. 2007;829:195–201.
Caires ACF, de Almeida ET, Mauro AE, Hemerly J, Valentini SR. Síntese e atividade citotóxica de alguns azido-ciclopaladados estabilizados com ligantes bifosfínicos. Quím Nova. 1999;22:329–34.
Cutillas N, Yellol GS, de Haro C, Vicente C, Rodríguez V, Ruiz J. Anticancer cyclometallated complexes of platinum group metals and gold. Coord Chem Rev. 2013;257:2784–97.
Navarro M, Betancourt A, Hernández C, Marchán E. Palladium polypyridyl complexes: synthesis, characterization, dna interaction and biological activity on Leishmania (L.) Mexicana. J Braz Chem Soc. 2008;19:1355–60.
Dharmaraj N, Viswanathamurthi P, Natarajan K. Ruthenium(II) complexes containing bidentate Schiff bases and their antifungal activity. Trans Met Chem. 2001;26:105–9.
Prasad KS, Kumar LS, Chandan S, Kumar RMN, Revanasiddappa HD. Palladium(II) complexes as biologically potent metallo-drugs: synthesis, spectral characterization, DNA interaction studies and antibacterial activity. Spect Acta Part A Mol Biomol Spect. 2013;107:108–16.
Kocyigit O, Guler E. The (salophen)-bridged Fe/Cr(III) capped complexes with triphenylene core: synthesis and characterization. J Organomet Chem. 2011;696:3106–12.
Nakamoto K. Infrared and Raman spectra of inorganic and coordination compounds: part B, applications in coordination, organometallic, and bioinorganic chemistry. 6th ed. Hoboken: Wiley; 2009.
Moro AC, Mauro AE, Ananias SR. Clivagem dos ciclopaladados diméricos [Pd(dmba)(µ-X)]2 (dmba = N, N-dimetilbenzilamina; X = Cl, N3, NCO) por tiouréia. Eclét Quím. 2004;29:57–61.
Lucca Neto VA. Mauro AE, Caires ACF, Ananias SR, de Almeida ET. Synthesis, characterization and thermal behavior of cyclopalladated compounds of the type [Pd{C6H4CH2 N(CH3)2}(µ-X)]2 (X = Cl, NCO, SCN, CN). Polyhedron. 1999;18:413–7.
Powder Diffraction File of the Joint Committee on Powder Diffraction Standards. Sets 1-32, published by the International Center of Diffraction Data Swarthmore, PA 19081, USA, 1982.
Netto AVG, Takahashi PM, Frem RCG, Mauro AE, Zorel HE Jr. Thermal decomposition of palladium(II) pyrazolyl complexes. Part I. J Anal Appl Pyrolysis. 2004;72:183–9.
Netto AVG, Santana AM, Mauro AE, Frem RCG, de Almeida ET, Crespi, Zorel HE Jr. Thermal decomposition of palladium(II) pyrazolyl complexes, part II. J Therm Anal Calorim. 2005;79:339–42.
De Almeida ET, Santana AM, Netto AVG, Torres C, Mauro AE. Thermal study of cyclopalladated complexes of the type [Pd2(dmba)2X2(bpe)] - (X = NO3, Cl, N3, NCO, NCS; bpe = trans-1,2-bis(4-pyridyl)ethylene). J Therm Anal Calorim. 2005;82:361–4.
Souza RA, Mauro AE, Netto AVG, da Cunha GA, de Almeida ET. Synthesis, characterization, and thermal behavior of palladium(II) coordination compounds containing isonicotinamide. J Therm Anal Calorim. 2011;106:375–8.
Rocha FV, Barra CV, Franchi SJS, Netto AVG, Mauro AE, Frem RCG. Study on the thermal behavior of the complexes of the type[PdX2(tdmPz)] (X = Cl−, Br−, I−, SCN−). J Therm Anal Calorim. 2011;106:385–9.
Stevanato A, Mauro AE, Netto AVG. Thermal and spectroscopic investigation on N, N-dimethylbenzylamine based cyclopalladated compounds containing isonicotinamide. J Therm Anal Calorim. 2009;97:149–52.
Housecroft CE, Sharpe AG. Inorg Chem. 2nd ed. Harlow: Pearson; 2005.
Acknowledgements
We thank CAPES, CNPq, FINEP, and FAPEMIG for financial support and scholarship: Bozza GF (CAPES), Sarto LE (FAPEMIG).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Bozza, G.F., Sarto, L.E., Torres, C. et al. Synthesis and thermal behavior study of complexes of the type [Pd(μ-X)(4-eb-p-phen)]2 (X = Cl, Br, I, N3, NCO, SCN) and 4-eb-p-phen [bis(4-ethylbenzyl)p-phenylenediimine]. J Therm Anal Calorim 118, 67–74 (2014). https://doi.org/10.1007/s10973-014-4015-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10973-014-4015-9