Synthesis and spectroscopic characterization of a novel coordination polymer of palladium(II) with pyrazole and azido ligands
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The one-dimensional coordination polymer of palladium(II) with pyrazolato (Pz -) and azide (N 3 -) as bridging ligands, of formula [Pd 3(μ-N 3)(μ-Pz) 5] n, has been prepared. From IR and Raman studies it was evidenced the exobidentate nature of pyrazole ligands as well the μ-1,1-bridging coordination of azido groups. NMR experiments showed two sets of broadened signals with different intensities indicating the presence of pyrazolato groups in distinct chemical environments. The proposed structure of [Pd 3(μ-N 3)(μ-Pz) 5] n consists of a zigzag ribbon in which each (Pz) 2Pd(Pz) 2 entity is bound to two stacked planar units [Pd(μ-Pz)(μ-N 3)Pd core] with very weak Pd-Pd interaction, based on UV-Vis spectroscopy.
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Azide , Coordination polymer , IR spectroscopy , NMR spectroscopy , Palladium(II) , Pyrazole , Coordination reactions , Infrared spectroscopy , Molecular structure , Nuclear magnetic resonance spectroscopy , Palladium compounds , Synthesis (chemical) , Coordination polymers , Palladium (II) , Organic polymers
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Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, v. 374, p. 255-260.
