Structure and magnetic properties of two lanthanide–nitronyl nitroxide chain compounds
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- 英文论文题名：Structure and magnetic properties of two lanthanide–nitronyl nitroxide chain compounds
- 论文作者：Juan Sun ; Guifang Sun ; Licun Li
- 英文论文作者：Juan Sun ; Guifang Sun ; Licun Li ; Department of Chemistry ; Nan Kai University
- 年：2016
- 作者机构：Department of Chemistry,Nan Kai University;
- 英文论文关键词：Chain compounds ; Nitronyl nitroxide ; Antiferromagnetic coupling
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第十六分会：晶体工程
- 语种：英文
- 分类号：O641.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第十六分会 ; 晶体工程
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：253k
- 原文格式：D
- 会议级别：全国
摘要
Recent years,the considerable use of lanthanide ions has resulted in great development in the field of molecular nanomagnets.One-dimensional Ln-nitronyl nitroxide chain complexes have been studied in molecular nanomagnets for decades.~(1-4) For example,the alternating Dy~Ⅲ-radical 1D chain,[Dy(hfac)_3(NITPhOPh)]_n,which behaves as the first successful example of rare-earth-based SCMs.~4 Herein,two lanthanide-nitronyl nitroxide chain compounds[Ln(hfac)_3NitPhIm](Ln~Ⅲ = Gd 1,Dy 2;hfac = hexafluoroacetylacetonate;NitPhIm =2-[3-(1-imidazolyl)-phenyl]-4,4,5,5-tetramethylimidazoline-l-oxyl-3-oxide) have been synthesized.Each Ln sites are bridged via the imidazole nitrogen atom of one NitPhIm ligand and one of the NO groups of the other NitPhIm ligand to develop an one-dimensional chain(Figure 1).Magnetic studies indicate that the Gd(Ⅲ) complex shows antiferromagnetic interaction(Figure 2),which may due to the short NO-ON interactions dominate in the low temperature region.
Recent years,the considerable use of lanthanide ions has resulted in great development in the field of molecular nanomagnets.One-dimensional Ln-nitronyl nitroxide chain complexes have been studied in molecular nanomagnets for decades.~(1-4) For example,the alternating Dy~Ⅲ-radical 1D chain,[Dy(hfac)_3(NITPhOPh)]_n,which behaves as the first successful example of rare-earth-based SCMs.~4 Herein,two lanthanide-nitronyl nitroxide chain compounds[Ln(hfac)_3NitPhIm](Ln~Ⅲ = Gd 1,Dy 2;hfac = hexafluoroacetylacetonate;NitPhIm =2-[3-(1-imidazolyl)-phenyl]-4,4,5,5-tetramethylimidazoline-l-oxyl-3-oxide) have been synthesized.Each Ln sites are bridged via the imidazole nitrogen atom of one NitPhIm ligand and one of the NO groups of the other NitPhIm ligand to develop an one-dimensional chain(Figure 1).Magnetic studies indicate that the Gd(Ⅲ) complex shows antiferromagnetic interaction(Figure 2),which may due to the short NO-ON interactions dominate in the low temperature region.
Recent years,the considerable use of lanthanide ions has resulted in great development in the field of molecular nanomagnets.One-dimensional Ln-nitronyl nitroxide chain complexes have been studied in molecular nanomagnets for decades.~(1-4) For example,the alternating Dy~Ⅲ-radical 1D chain,[Dy(hfac)_3(NITPhOPh)]_n,which behaves as the first successful example of rare-earth-based SCMs.~4 Herein,two lanthanide-nitronyl nitroxide chain compounds[Ln(hfac)_3NitPhIm](Ln~Ⅲ = Gd 1,Dy 2;hfac = hexafluoroacetylacetonate;NitPhIm =2-[3-(1-imidazolyl)-phenyl]-4,4,5,5-tetramethylimidazoline-l-oxyl-3-oxide) have been synthesized.Each Ln sites are bridged via the imidazole nitrogen atom of one NitPhIm ligand and one of the NO groups of the other NitPhIm ligand to develop an one-dimensional chain(Figure 1).Magnetic studies indicate that the Gd(Ⅲ) complex shows antiferromagnetic interaction(Figure 2),which may due to the short NO-ON interactions dominate in the low temperature region.
引文
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[2]Liu,R.-N.;Li,L.-C.;Wang,X.-L.;Yang,P.-P.;Wang,C.;Liao,D.-Z.;Sutter,J.-P.Chem.Commun.2010,46;2566.
[3]Hu,P.;Wang,X.-F.;Ma,Y.;Wang,Q.-L.;Li,L.-C.;Liao,D.-Z.Dalton Trans.2014,43;2234.
[4]Bogani,L.;Sangregorio,C.;Sessoli,R.;Gatteschi,D.Angew.Chem.,Int.Ed.2005,44;5817.
[2]Liu,R.-N.;Li,L.-C.;Wang,X.-L.;Yang,P.-P.;Wang,C.;Liao,D.-Z.;Sutter,J.-P.Chem.Commun.2010,46;2566.
[3]Hu,P.;Wang,X.-F.;Ma,Y.;Wang,Q.-L.;Li,L.-C.;Liao,D.-Z.Dalton Trans.2014,43;2234.
[4]Bogani,L.;Sangregorio,C.;Sessoli,R.;Gatteschi,D.Angew.Chem.,Int.Ed.2005,44;5817.