Synthesis, Spectroscopic Studies and Crystal Structure of a New Co (III) Complex Derived from ONO Donor Tridentate Schiff Base Ligand
Mbossé Ndiaye Guèye, Bineta Diome, Thierno Moussa Seck, Ousmane Diouf, Ibrahima Elhadji Thiam, Mohamed Gaye
International Research Journal of Pure and Applied Chemistry · pp. 124–133 · Published 21 Dec 2024
10.9734/irjpac/2024/v25i6890Abstract
A new Co (III) complex prepared by the reaction of 2-((2 hydroxyethylimino)methyl)phenol (H2L) with Co(III) ion is reported in this paper. The H2L ligand is structurally characterized by elemental analysis, NMR and infrared spectroscopies. The mononuclear complex [Co(HL)2]·Cl·H2O, is characterized by infrared spectroscopy, elemental analysis, conductance and magnetic room temperature measurements and single crystal X-ray diffraction. The compound crystallizes in the monoclinic system in the space group P21/c with the unit cell parameters a = 16.4258 (6) Å, b = 10.1398 (4) Å, c = 11.7705(4) Å, β = 94.885(3)°, Z = 4, R1 = 0.0374 and wR2 = 0.075. The asymmetric unit of the compound contains a discrete [Co(HL)2]+ cation, one free chloride anion and one uncoordinated water molecule. The coordination polyhedron around the Co (III) center is best described as a distorted octahedral with CoN2O4 chromophore. The crystal structure of the complex is stabilized by intramolecular and intermolecular hydrogen bonds.
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