Hetero-tri-spin [2p-3d-4f] Chain Compounds Based on Nitronyl Nitroxide Lanthanide Metallo-Ligands: Synthesis, Structure, and Magnetic Properties

Autor: Dai-Zheng Liao, Yungai Li, Xiufeng Wang, Mei Zhu, S. Ramasesha, V. M. L. Durga Prasad Goli, Peng Hu, Jean-Pascal Sutter, Licun Li
Přispěvatelé: Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Nankai University (NKU), Key Laboratory of Metal and Molecule-based Material Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering [Tianjin, China], Solid State and Structural Chemistry Unit, Indian Institute of Science, Indian Institute of Science, Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2014
Předmět:
Zdroj: Chemistry-A European Journal
Chemistry-A European Journal, Wiley-VCH Verlag, 2014, 20 (41), pp.13356-13365. ⟨10.1002/chem.201403581⟩
ISSN: 0947-6539
1521-3765
Popis: Employing nitronyl nitroxide lanthanide(III) com- plexes as metallo-ligands allowed the efficient and highly se- lective preparation of three series of unprecedented hetero- tri-spin (CuLn-radical) one-dimensional compounds. These 2p-3d-4f spin systems, namely (Ln3Cu(hfac)11(NitPhOAll)4) (Ln III = Gd 1Gd ,T b1Tb ,D y1Dy; NitPhOAll = 2-(4'-allyloxyphen- yl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide), (Ln3Cu- (hfac)11(NitPhOPr)4 )( Ln III = Gd 2Gd ,T b2Tb ,D y2Dy ,H o2Ho ,Y b 2Yb; NitPhOPr = 2-(4'-propoxyphenyl)-4,4,5,5-tetramethyl-imi- dazoline-1-oxyl-3-oxide) and (Ln3Cu(hfac)11(NitPhOBz)4) (Ln III = Gd 3Gd ,T b3Tb ,D y3Dy; NitPhOBz = 2-(4'-benzyloxy- phenyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide) in- volve O-bound nitronyl nitroxide radicals as bridging ligands in chain structures with a (Cu-Nit-Ln-Nit-Ln-Nit-Ln-Nit) re- peating unit. The dc magnetic studies show that ferromag- netic metal-radical interactions take place in these hetero- tri-spin chain complexes, these and the next-neighbor inter- actions have been quantified for the Gd derivatives. Com- plexes 1Tb and 2Tb exhibit frequency dependence of ac mag- netic susceptibilities, indicating single-chain magnet behav- ior.
Databáze: OpenAIRE
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