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[1]时海燕*,危荣佳,陶军.双核自旋交叉化合物的合成、穆斯堡尔谱和磁性研究[J].厦门大学学报(自然科学版),2017,56(03):359-363.[doi:10.6043/j.issn.0438-0479.201605025]
 SHI Haiyan*,WEI Rongjia,TAO Jun.Synthesis,Mssbauer Spectra and Magnetic Properties of a Dimeric Spincrossover Complex[J].Journal of Xiamen University(Natural Science),2017,56(03):359-363.[doi:10.6043/j.issn.0438-0479.201605025]
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双核自旋交叉化合物的合成、穆斯堡尔谱和磁性研究(PDF/HTML)
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《厦门大学学报(自然科学版)》[ISSN:0438-0479/CN:35-1070/N]

卷:
56卷
期数:
2017年03期
页码:
359-363
栏目:
研究论文
出版日期:
2017-05-24

文章信息/Info

Title:
Synthesis,Mssbauer Spectra and Magnetic Properties of a Dimeric Spincrossover Complex
文章编号:
0438-0479(2017)03-0359-05
作者:
时海燕*危荣佳陶军
厦门大学 化学化工学院,固体表面物理化学国家重点实验室,福建厦门361005
Author(s):
SHI Haiyan*WEI RongjiaTAO Jun
State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China
关键词:
双核自旋交叉磁性穆斯堡尔谱
Keywords:
dimerspin crossovermagnetic propertyMssbauer spectrum
分类号:
O 614.81+1
DOI:
10.6043/j.issn.0438-0479.201605025
文献标志码:
A
摘要:
自旋交叉化合物的电子构型双稳性使其在分子传感器、信息存储器件等方面具有可观的应用前景.合成了一个在高温区发生自旋交叉转变的双核化合物并对其进行表征.173 K的单晶结构解析显示该化合物的所有FeⅡ离子都处于低自旋态.FeⅡ离子通过与三氰基甲烷阴离子配体桥连,形成双核结构.常温穆斯堡尔谱显示该化合物含有2个独立的低自旋FeⅡ组分.变温磁化率测试表明,大约50%的该化合物分子在高温区(286~390 K)发生从低自旋态到高自旋态的转变.该结果表明使用具有较强配体场的桥连配体可有效诱导自旋交叉行为.
Abstract:
Spincrossover materials have attracted considerable interests due to their potential applications such as the development of miniature moleculebased display devices or data storage elements.We report here in the synthesis and characterization of a dimeric FeⅡ complex that shows spin crossover at high temperatures.Singlecrystal Xray diffraction studies at 173 K revealed that the FeⅡ ions were bridged by tricyanomethanide groups to form a dimeric structure,and the resulting complex was in a whole lowspin state.The Mssbauer spectrum at room temperature indicated that the complex was composed of two lowspin FeⅡspecies.Variabletemperature magnetic susceptibility measurements implied that about 50% of the complex molecules underwent a lowspintohighspin conversion in the 286390 K temperature range.The result indicates that spin crossover can be induced by strong bridging ligands.

参考文献/References:

[1] GüTLICH P,GOODWIN H A.Spin crossover:an overall perspective[J].Top Curr Chem,2004,233:1-47.
[2] TAO J,WEI R J,HUANG R B,et al.Polymorphism in spin-crossover systems[J].Chem Soc Rev,2012,41(2):703-737.
[3] SATO O,TAO J,ZHANG Y Z.Control of magnetic properties through external stimuli[J].Angew Chem Int Ed,2007,46(13):2152-2187.
[4] BONNET S,SIEGLER M A,COSTA J S,et al.A two-step spin crossover mononuclear iron(Ⅱ)complex with a [HS-LS-LS] intermediate phase[J].Chem Commun,2008(43):5619-5621.
[5] GRIFFIN M,SHAKESPEARE S,SHEPHERD H J,et al.A symmetry-breaking spin-state transition in iron(Ⅲ)[J].Angew Chem Int Ed,2011,50(4):896-900.
[6] AGUADO F,RODRIGUEZ F,NU?EZ P.Pressure-induced Jahn-Teller suppression and simultaneous high-spin to low-spin transition in the layered perovskite CsMnF4[J].Phys Rev B,2007,76(9):094417.
[7] BIERNACKI S W.Temperature-induced spin-state transitions in LaCoO3:a two-level model[J].Phys Rev B,2006,74(18):184420.
[8] KRIVOKAPIC I,ZERARA M,DAKUA M L,et al.Spin-crossover in cobalt(Ⅱ)imine complexes[J].Coord Chem Rev,2007,251(3/4):364-378.
[9] MA H,PETERSEN J L,YOUNG V G Jr,et al.Solid-state spin crossover of Ni(Ⅱ)in a bioinspired N3S2ligand field[J].J Am Chem Soc,2011,133(15):5644-5647.
[10] GüTLICH P,GARCIA Y,GOODWIN H A.Spin crossover phenomena in Fe(Ⅱ)complexes[J].Chem Soc Rev,2000,29(6):419-427.
[11] HALDER G J,KEPERT C J,MOUBARAKI B.Guest-dependent spin crossover in a nanoporous molecular framework material[J].Science,2002,298(5599):1762-1765.
[12] SOUTHON P D,LIU L,FELLOWS E A,et al.Dynamic interplay between spin-crossover and host-guest function in a nanoporous metal-organic framework material[J].J Am Chem Soc,2009,131(31):10998-11009
[13] REAL J A,ZAREMBOWITCH J,KAHN O,et al.Magnetic interaction and spin transition in iron(Ⅱ)dinuclear compounds.Crystal structure of(μ-2,2’-bipyrimidine)bis[(2,2’-bipyrimidine)bis(thiocyanato)iron(Ⅱ)][J].Inorg Chem,1987,26(18):2939-2943.
[14] TUNA F,LEES M R,CLARKSON G J,et al.Readily prepared metallo-supramolecular triple helicates designed to exhibit spin-crossover behaviour[J].Chemistry,2004,10(22):5737-5750.
[15] PELLETERET D,CLERAC R,MATHONIERE C,et al.Asymmetric spin crossover behaviour and evidence of light-induced excited spin state trapping in a dinuclear iron(Ⅱ)helicate[J].Chem Commun,2009(2):221-223.
[16] MATOUZENKO G S,JEANNEAU E,VERAT A Y,et al.Spin crossover and polymorphism in a family of 1,2-bis(4-pyridyl)ethene-bridged binuclear iron(Ⅱ)complexes.A key role of structural distortions[J].Dalton Trans,2011,40(37):9608-9618.
[17] WEI R J,HUO Q,TAO J,et al.Spin-crossover Fe<sup>Ⅱ</sub> 4 squares:two-step complete spin transition and reversible single-crystal-to-single-crystal transformation[J].Angew Chem Int Ed,2011,50(38):8940-8943.
[18] WEI R J,TAO J,HUANG R B,et al.Anion-dependent spin crossover and coordination assembly based on [Fe(tpa)]2+[tpa=tris(2-pyridylmethyl)amine] and [N(CN)2]-:square,zigzag,dimeric,and [4+1]-cocrystallized complexes[J].Eur J Inorg Chem,2013(5/6):916-926.
[19] TYEKLAR Z,JACOBSON R R,WEI N,et al.Reversible reaction of dioxygen(and carbon monoxide)with a copper(Ⅰ)complex.X-ray structures of relevant mononuclear Cu(Ⅰ)precursor adducts and the trans-(μ-1,2-peroxo)dicopper(Ⅱ)product[J].J Am Chem Soc,1993,115(7):2677-2689.
[20] SHELDRICK G M.A short history of SHELX[J].Acta Crystallogr Sect A,2008,64:112-122.
[21] HALCROW M A.Structure:function relationships in molecular spin-crossover complexes[J].Chem Soc Rev,2011,40(7):4119-4142.
[22] KAHN O,MARTINEZ C J.Spin-transition polymers:from molecular materials toward memory devices[J].Science,1998,279(5347):44-48.
[23] LI B,WEI R J,TAO J,et al.Solvent-induced transformation of single crystals of a spin-crossover(SCO)compound to single crystals with two distinct SCO centers[J].J Am Chem Soc,2010,132(5):1558-1566.

备注/Memo

备注/Memo:
收稿日期:2016-05-24 录用日期:2016-07-05
基金项目:国家自然科学基金(21325103)
*通信作者:hyshi@xmu.edu.cn
引文格式:时海燕,危荣佳,陶军.双核自旋交叉化合物的合成、穆斯堡尔谱和磁性研究[J].厦门大学学报(自然科学版),2017,56(3):359-363.
Citation:SHI H Y,WEI R J,TAO J.Synthesis,M?ssbauer spectra and magnetic properties of a dimeric spin-crossover complex[J].J Xiamen Univ Nat Sci,2017,56(3):359-363.(in Chinese)
更新日期/Last Update: 1900-01-01