Abstract
The crystal structures of bis[2-(ferrocenyl-iminomethyl)phenoxy]cobalt(II) (Co II (L) 2 ) [monoclinic, a = 12.5466(3) Å, b = 10.6782(3) Å, c = 21.2695(6) Å, α = γ = 90°, β = 92.944(2)°, V = 2845.82(13) Å3, Z = 4, space group P21/c] and bis(2-[(4-dimethylamino-phenylimino)-methyl]-phenoxy) cobalt (II) (Co II (M) 2 ) [triclinic, a = 10.2916(4) Å, b = 16.4867(10) Å, c = 17.6782(11) Å, α = 114.754(2)°, β = 96.614(4)°, γ = 97.736(4), Z = 4, space group P-1] dominated by extensive hydrogen bonding such as O–H···N, N–H···O and N–H···N interactions. In both structures the central CoII is displaying a slightly distorted tetrahedral coordination sphere involving two iminoethyl-phenoxy ligands. The inhibition efficiency of the Co complexes concerning the corrosion of mild steel in acidic solution has been investigated by electrochemical impedance spectroscopy.
Graphical Abstract
The crystal structures of two bis(iminomethylphenoxy) cobalt complexes containing respectively a ferrocenyl and a phenylendiamine group are described. First results on their inhibition properties concerning the corrosion of mild steel in hydrochloric acid are reported and discussed.
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Acknowledgements
The authors thank Dr. Lahcène Ouahab (UMR 6226 CNRS—Université de Rennes 1) for his help and would like to acknowledge the Algerian « Directions Générale de la Recherche » and the « Ministère de l’Enseignement Supérieur et la recherche Scientifique» for financial support.
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Belhadj, N., Ourari, A., Keraghel, S. et al. Crystal Structure and Corrosion Inhibition Properties of Ferrocenyl- and Phenylendiamine-Iminomethylphenoxy Cobalt Complexes. J Chem Crystallogr 47, 40–46 (2017). https://doi.org/10.1007/s10870-017-0678-y
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DOI: https://doi.org/10.1007/s10870-017-0678-y