Synthesis and Characterization of New Palladium(II) Complexes Containing N-Alkylamino-3,5-diphenylpyrazole Ligands. Crystal Structure of [PdCl(L2)](BF<inf>4</inf>) {L2 ≤ Bis[2-(3,5-diphenyl-1-pyrazolyl)ethyl] ethylamine}

Gemma Aragay, Josefina Pons, Jordi García-Antón, Ángeles Mendoza, Guillermo Mendoza-Daz, Teresa Calvet, Merc̀ Font-Bardia, Josep Ros

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Abstract

In this paper, the synthesis of two new N,N′,N-ligands, bis[2-(3,5-diphenyl-1-pyrazolyl)ethyl]amine (L1) and bis[2-(3,5-diphenyl-1- pyrazolyl)ethyl]ethylamine (L2) is reported. These ligands form complexes with the formula [PdCl(N,N′,N)]Cl when reacting with [PdCl2(CH 3CN)2] in a 1:1 metal-to-ligand molar ratio. Treatment of these ligands with [PdCl2(CH3CN)2] in a 1:1 metal-to-ligand molar ratio in the presence of AgBF4 or NaBF 4 gave [PdCl(N,N′,N)](BF4) complexes. These Pd II complexes were characterized by elemental analyses, conductivity measurements, mass spectrometry, and IR, 1H, and 13C{ 1H} NMR spectroscopies. The X-ray structure of the complex [PdCl(L2)](BF4) has been determined. The metal atom is coordinated by two azine nitrogen atoms and one amine nitrogen atom of the aminopyrazole ligand. The distorted square planar coordination is completed by one chlorine atom. In this complex, intermolecular stacking interactions are present. © CSIRO 2009.
Original languageEnglish
Pages (from-to)475-482
JournalAustralian Journal of Chemistry
Volume62
Issue number5
DOIs
Publication statusPublished - 2 Jul 2009

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