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
金属学报(英文版)
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.
关键词:
ferromagnetism
,
null
,
null
,
null
