Synthesis and Characterization of Ferrocene-Chelating Heteroscorpionate Complexes of Nickel(II) and Zinc(II)
Abstract
The first example of a ferrocene-chelating heteroscorpionate, [Li(THF)<sub>2</sub>][fc(PPh<sub>2</sub>)(BH[(3,5-Me)<sub>2</sub>pz]<sub>2</sub>)] ((fc<sup>P,B</sup>)Li(THF)<sub>2</sub>, fc = 1,1′-ferrocenediyl) is described. Starting from a previously reported compound, fcBr(PPh<sub>2</sub>), a series of ferrocene derivatives, fc(PPh<sub>2</sub>)(B[OMe]<sub>2</sub>), [Li(OEt<sub>2</sub>)][fc(PPh<sub>2</sub>)(BH<sub>3</sub>)], [Li(THF)<sub>2</sub>][fc(PPh<sub>2</sub>)(BH[(3,5-Me)<sub>2</sub>pz]<sub>2</sub>)] (pz = pyrazole), was isolated and characterized. Compound (fc<sup>P,B</sup>)Li(THF)<sub>2</sub> allowed the synthesis of the corresponding nickel and zinc complexes, (fc<sup>P,B</sup>)NiCl, (fc<sup>P,B</sup>)NiMe, (fc<sup>P,B</sup>)ZnCl, and (fc<sup>P,B</sup>)ZnMe. All compounds were characterized by NMR spectroscopy, while the zinc and nickel complexes were also characterized by X-ray crystallography. The redox behavior of (fc<sup>P,B</sup>)NiCl, (fc<sup>P,B</sup>)NiMe, (fc<sup>P,B</sup>)ZnCl, and (fc<sup>P,B</sup>)ZnMe was studied by cyclic voltammetry and supported by density functional theory calculationsSimilar works
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Last time updated on 25/12/2021