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Synthesis,physicalstudiesandcrystalstructuredeterminationofY(III)and Er(III)complexesof1?(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),whereHListheneutralSchiff 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 crystalX?raydetermination.BothcomplexescrystallizesinthetriclinicspacegroupP?with unitcelldimensionsforcomplexofY(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=0.051and wR2 = 0.112and for complex ofEr(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, thecoordination polyhedraaroundLn(III)atomsare best describedasadistortedtricappedtrigonal


Auteur(s) : Mbosse Ndiaye Gueye,Moussa Dieng,Djiby Lo, Ibrahima Elhadji Thiam,Aliou Hamady Barry,Mohamed Gaye,Abdou Salam Sall,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 : GAYE Mohamed Lamine