Synthesis and Characterization of a New Cobaloxime-Terpyridine Compound

Crystals

Priscila Astudillo¹  Francisco Gajardo¹  Alvaro Delgadillo¹  Sebastián Pizarro¹  Iván Brito² 

[1] Departamento de Química, Facultad de Ciencias, Universidad de La Serena, Casilla 599, Benavente 980, La Serena 1720170, Chile;Departamento de Química, Universidad de Antofagasta, Av. Angamos 601, Antofagasta 1240000, Chile;

关键词: cobalt;    cobaloxime;    cyclic voltammetry;    terpyridine;    X-ray structure;   

DOI  :  10.3390/cryst7060175

来源: DOAJ

【 摘 要 】

A new cobaloxime was synthesized by the reaction of cobalt chloride and diphenylglyoxime in methanol, followed by the addition of 4′-(4-pyridyl)-2,2′:6′,2′′-terpyridine, pytpy. This complex was characterized by UV–Vis spectroscopy, 1H-NMR spectroscopy, cyclic voltammetry, and single-crystal X-ray diffraction analysis. In cyclic voltammetry experiments an irreversible reduction wave assigned to Co(III)/Co(II) at Ecp = −0.31 V vs. Ag/AgCl and a quasi-reversible process assigned to the Co(II)/Co(I) reduction at −0.72 V vs. Ag/AgCl were observed. The crystal of the complex belongs to the triclinic space group P1 with a = 12.4698(6) Å, b = 14.1285(8) Å, c = 15.5801(8) Å, α = 109.681(4)°, β = 112.975(4)°, γ = 81.67(96.414(4)°3)°, V = 2284.0(2) Å3, Z = 2, Dc = 1.408 mg·m−3, μ = 0.66 mm−1, F(000) = 996, and final R1 = 0.0564, ωR2 = 0.1502.

【 授权许可】

Unknown