Synthesis and Characterization of a New Cobaloxime-Terpyridine Compound

Sebastián Pizarro, Priscila Astudillo, Francisco Gajardo, Iván Brito, Alvaro Delgadillo
2017 Crystals  
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, 1 H-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
more » ... 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) Å 3 , Z = 2, Dc = 1.408 mg·m −3 , µ = 0.66 mm −1 , F(000) = 996, and final R1 = 0.0564, ωR2 = 0.1502.
doi:10.3390/cryst7060175 fatcat:znwaepk3mrdldoenfjemzhzh6i