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Synthesis, physical studies and crystal structure determination of Y(III) and Er(III) complexes of 1-(pyridin-2-yl)-2-(pyridine-2-ylmethylene)hydrazine
Gueye, Mbosse Ndiaye
Dieng, Moussa
Lo, Djiby
Thiam, Ibrahima Elhadji
Barry, Aliou Hamady
Gaye, Mohamed
Sall, Abdou Salam
Retailleau, Pascal
Complex
Schiff base
Crystal structure
NMR spectroscopy
Antioxidant activity
Magnetic properties
Two isotype mononuclear yttrium(III) and erbium(III) complexes, {[Y(HL)(OAc)2(H2O)2]. (H2O)∙(NO3)} (1) and {[Er(HL) (OAc)2(H2O)2].(H2O)∙(NO3)} (2), where HL is the neutral Schiff base ligand 1-(pyridin-2-yl)-2-(pyridine-2-ylmethylene)hydrazine, and OAc is the acetate anion, have been synthesized and characterized by physicochemical methods and single crystal X-ray determination. Both complexes crystallizes in the triclinic space group Pī with unit cell dimensions for complex of Y(III) a = 7.909 (2) Å, b = 11.718 (4) Å, c = 12.497 (3) Å, α = 78.907 (3)°, b = 73.840 (3)°, γ = 72.074 (3)°, V = 1051.26 (6) Å3, Z = 2, R1 = 0.051 and wR2 = 0.112 and for complex of Er(III)a = 7.913 (1) Å, b = 11.719 (2) Å, c = 12.487 (2) Å, α = 78.832 (1)°, α = 73.674 (1)°, γ = 72.012 (1)°, V = 1049.64 (3) Å3, Z = 2, R1 = 0.028, and wR2 = 0.062. In both complexes, the coordination polyhedra around Ln(III) atoms are best described as a distorted tricapped trigonal prism. Antioxidant activities of the ligand and its Y(III) and Er(III) complexes are studied.
Atlanta Publishing House LLC
2017-06-30
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https://www.eurjchem.com/index.php/eurjchem/article/view/1557
10.5155/eurjchem.8.2.137-143.1557
European Journal of Chemistry; Vol. 8 No. 2 (2017): June 2017; 137-143
2153-2257
2153-2249
eng
https://www.eurjchem.com/index.php/eurjchem/article/view/1557/pdf_1557
https://www.eurjchem.com/index.php/eurjchem/article/view/1557/2594
https://www.eurjchem.com/index.php/eurjchem/article/view/1557/2595