氮氧自由基单核钬配合物的合成与结构.pdf

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1、第26卷第l2期无机化学学报V01．26No．122010年12月CHINESEJ0URNALOFIN0RGANICCHEMISTRY2285—2288氮氧自由基单核钬配合物的合成与结构王淑萍-k,l王玉肖尹晓颖’张旭红1张建军2杨述韬-(河北师范大学化学与材料科学学院，石家庄050016)2河北师范大学实验中心，石家庄0500161关键词：氮氧自由基；钬配合物；晶体结构中图分类号：0614．343文献标识码：A文章编号：1001—4861(2010)12—2285—04SynthesisandCrystalStruct

2、ureofaMononuclearHNitronylNitroxideRadicalComplexWANGShu—PingWANGYu—XiaoYINXiao—YingZHANGXu—Hong。ZHANGJian—JunYANGShu—Tao。(CollegeofChem~try&MaterialScience，HebeiNormalUniversity,Sh~iazhuang050016)(2ExperimentalCenter,HebeiNormalUniversity,Shijiazhuang050016)Abst

3、ract：AnovelmononuclearHo㈣nitronylnitroxidecomplex[Ho(hfac)3(NITPhDma)2]，(NITPhDma=2-(4一dimethylamino—pheny1)一4，4，5，5-tetramethylimidaz0line一1·oxyl一3一oxide，hfac=hexafluoroacetylacetonate)，wassynth—esizedandstructurallycharacterizedbyX—raydiffraction．Itcrystallizes

4、inmonoclinic，spacegroupP21／nwitha-1．2745(1)nm，6=1．7531(2)nm，c=2．4828(2)nm，fl=93．753(2)。．TheHo㈣ioniseight—coordinatedwithadistorteddodecahedronenvironment．EachNITPhDmaradicalactsasmonodentateligandtowardsHo㈤ionthroughtheNOgroup．andthecomplexmoleculesarewellisolate

5、d．CCDC：775839．Keywords：nitronylnitroxideradical；holmium(~complex；crystalstructureInrecentyearsthefascinatingmagneticbehaviors(Ising)magneticanisotropy，inter—andintra-molecularofsingle—moleculemagnets(SMMs)andsingle—chainmagneticcoupling，etc．Aswellknown，lanthanide

6、ions，magnets(SCMs)，suchastheslowrelaxationofmagnet—especiallyheavylanthanideions，showalargemagneticisation，magnetichysteresisandthequantumtunnellinganisotropybasedontheirlargespin—orbitcoupling．So(QT)ofmagnetisation，havearouseddeepinterestfromtheyhavebecomethebes

7、tcandidatesforthebothapplicativeandtheoreticalpointsofview[1_2．TheyconstructionofSMMsandSCMsinthefieldofhavebeenproposedascandidatesforhigh—densitymolecularengineering．informationstorageandquantumcomputationTheseRadicalsofthenitronylnitroxidefamilyfNITR)magneticp

8、ropertiesistheresultofthecombinationofaalsoattractmuchattentionsincethediscoveryofthelargegroundstatespinvalue，asignificantuniaxialfirstSCMbvGatteschi[；q．Since