STUDIES ON FERROM AGNETIC COUPLING COMPLEXES OF LANTHANIDES WITH NITRONYL NITROXIDES

金属学报(英文版), 1999, 12(4): 701-704.

STUDIES ON FERROM AGNETIC COUPLING COMPLEXES OF LANTHANIDES WITH NITRONYL NITROXIDES

Z.Wang1) , Q.H.Zhao2) , D.Z.Liao2) , Z.H.Jiang1) , S.P.Yana and G.L.Wang1) 1) Department of Chemistry , Nankai University , Tianjin 300071 , China. 2) State Key Laboratory Coordination Chemistry , Nanjing University , Nanjing 210008 , China

Keywords： ferromagnetism , null , null , null

Five novelcomplexesofformula 〔Ln( pfpr)3〕2 NITRS·nH2 O, where Ln = Nd, Sm , Eu, Gd, Dy; pfpr= pentafluoropropionate; NITRS= 2 - (2’- thienyl) - 4,4 ,5 ,5 te tramethylimidazoline 1 oxyl 3 oxide, and n= 6(for Nd);4(for Eu and Gd) ;2(for Sm and Dy), have been synthesized. Thesecomplexes werecharacterized by elemental analysis, IR, electronicspectra and EPR. Thevariabletemperature(2 300 K) magneticsusceptibility ofthecomplex 〔Gd(pfpr)3〕2 NITRS·4 H2 Owas determined and discussed. Theexchange integral,J= 0 44 cm 1 , wasfoundtobepositive,indicating a weakferromagneticspin ex changeinteraction between theradicaland Gd(III) ion.

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STUDIES ON FERROM AGNETIC COUPLING COMPLEXES OF LANTHANIDES WITH NITRONYL NITROXIDES

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