Synthesis and characterization of ferrocene-chelating heteroscorpionate complexes of nickel(II) and zinc(II)

Mark Abubekerov; Paula L Diaconescu

doi:10.1021/ic502691b

Synthesis and characterization of ferrocene-chelating heteroscorpionate complexes of nickel(II) and zinc(II)

Inorg Chem. 2015 Feb 16;54(4):1778-84. doi: 10.1021/ic502691b. Epub 2015 Jan 21.

Authors

Mark Abubekerov¹, Paula L Diaconescu

Affiliation

¹ Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095, United States.

PMID: 25607817
DOI: 10.1021/ic502691b

Abstract

The first example of a ferrocene-chelating heteroscorpionate, [Li(THF)2][fc(PPh2)(BH[(3,5-Me)2pz]2)] ((fc(P,B))Li(THF)2, fc = 1,1'-ferrocenediyl) is described. Starting from a previously reported compound, fcBr(PPh2), a series of ferrocene derivatives, fc(PPh2)(B[OMe]2), [Li(OEt2)][fc(PPh2)(BH3)], [Li(THF)2][fc(PPh2)(BH[(3,5-Me)2pz]2)] (pz = pyrazole), was isolated and characterized. Compound (fc(P,B))Li(THF)2 allowed the synthesis of the corresponding nickel and zinc complexes, (fc(P,B))NiCl, (fc(P,B))NiMe, (fc(P,B))ZnCl, and (fc(P,B))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(P,B))NiCl, (fc(P,B))NiMe, (fc(P,B))ZnCl, and (fc(P,B))ZnMe was studied by cyclic voltammetry and supported by density functional theory calculations.