Accueil > Résultats de la recherche > Suite de la publication

Synthesis, physical studies and crystal structure determination of Y(III) and Er(III) complexes of 1?(pyridin?2?yl)?2?(pyridine?2?ylmethylene)hydrazine

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 P? with unit cell dimensions for complex of Y(III) a = 7.909 (2) Å, b = 11.718 (4) Å, c = 12.497 (3) Å, ? = 78.907 (3)°, ? = 73.840 (3)°, ? = 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, ? = 78.832 (1)°, ? = 73.674 (1)°, ? = 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.


Auteur(s) : Mbosse Ndiaye Gueye, Moussa Dieng, Djiby Lo, Ibrahima Elhadji Thiam, Aliou Hamady Barry, Mohamed Gaye , Abdou Salam Sall and Pascal Retailleau
Pages : 137?143
Année de publication : 2017
Revue : European Journal of Chemistry
N° de volume : 8 (2)
Type : Article
Mise en ligne par : THIAM Ibrahima El Hadji