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Crystals 2017, 7(6), 175; doi:10.3390/cryst7060175

Synthesis and Characterization of a New Cobaloxime-Terpyridine Compound

1
Departamento de Química, Facultad de Ciencias, Universidad de La Serena, Casilla 599, Benavente 980, La Serena 1720170, Chile
2
Departamento de Química, Universidad de Antofagasta, Av. Angamos 601, Antofagasta 1240000, Chile
*
Author to whom correspondence should be addressed.
Academic Editor: Rainer Niewa
Received: 6 March 2017 / Revised: 7 June 2017 / Accepted: 13 June 2017 / Published: 19 June 2017
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Abstract

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. View Full-Text
Keywords: cobalt; cobaloxime; cyclic voltammetry; terpyridine; X-ray structure cobalt; cobaloxime; cyclic voltammetry; terpyridine; X-ray structure
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Pizarro, S.; Astudillo, P.; Gajardo, F.; Brito, I.; Delgadillo, A. Synthesis and Characterization of a New Cobaloxime-Terpyridine Compound. Crystals 2017, 7, 175.

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