کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9776253 1509483 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nano-sized tetralanthanoid-copper complex ions containing oximato bridges
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Nano-sized tetralanthanoid-copper complex ions containing oximato bridges
چکیده انگلیسی
Complexation of LnIII(hfac)3, LnIII(OAc)3, and [CuII(dmg)2]2− in the presence of Ph4P+ gave [Ln4Cu1]-type pentanuclear complexes (dmg = dimethylglyoximate dianion; Ln = La, Nd, Eu, Gd, Tb). Single-crystal X-ray diffraction analyses revealed that four Ln(IIl) ions formed a rectangular array around the copper ion at its inversion center. The [Ln4Cu1] core structures are essentially the same regardless of the different Ln ions. From the magnetic susceptibility measurements, the Cu(dmg)2 dianion moiety has been shown to play a role of the ferrimagnetic coupler among the Gd spins. The out-of-phase ac susceptibility of the [Tb4Cu1] complex exhibited anomalous frequency- dependence below 4 K, indicating blocking behavior potentially related to a single-molecule magnet.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 154, Issues 1–3, 22 September 2005, Pages 217-220
نویسندگان
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