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时间:2020-03-26
《基于非手性邻苯酚胺衍生物的半醌Fe(Ⅲ)络合物的镜面对称性破缺及其绝对构型关联.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、物理化学学报(WuliHuaxueXuebao)JuneActa_zJ馏.一C.Sin.2013,29(6),1183-11911183[Article]doi:10.3866/PKU.WHXB201304122ⅥⅣ.whxb.pku.edu.CI1基于非手性邻苯酚胺衍生物的半醌Fe(1l1)络合物的镜面对称性破缺及其绝对构型关联赵檑万仕刚陈成栋林以玑方雪明章慧(厦门大学化学化工学院化学系,固体表面物理化学国家重点实验室,福建厦门361005)摘要:以2.苯胺基_4,6.二叔丁基苯酚(HL)和FeCIz·4H:O为原料制备了一对手性半醌Fe(1
2、l1)络合物A.mer-[Fe(L。)。】和4.mer-[Fe(L)3】(L~sQ:2-苯亚胺基_4,6一二叔丁基苯酚,mer:经式构型),通过单晶X射线衍射分析结合单晶压制片膜的固体圆二色(CD)光谱确定了该络合物的绝对构型,在此基础上建立了此类半醌络合物[M(L』s。)3】(M=Cr,Fe,Co)的惟手性金属中心绝对构型与固体CD光谱之间的关联.此外,还对10份合成的【Fe(L)3】的大宗产物粉末与单晶的固体CD谱进行了比对分析,以及对1份合成产物进行10次重结晶的固体CD光谱表征.研究表明该化合物在结晶过程中发生了镜面对称性破缺(MSB)
3、,对映体过量(ee)值在15%一100%之间.关键词:半醌Fe(⋯)络合物:镜面对称性破缺;绝对构型:固体CD光谱:单晶X射线衍射中图分类号:O641MirrorSymmetryBreakingandAbsoluteConfigurationCorrelationsofFe(1l1)ComplexeswithAchiralSubstituted0一IminobenzosemiquinonatoLigandsZHAOLeiWANShi-GangCHENCheng--DongLINYi--JiFANGXue-MingZHANGHuiStateKey
4、LaboratoryofPhysicalChemistryofSolidSu啦ce.DepartmentChemistry,College0jChem&tryandChemicalEngineering,XiamenUniversity,Xiamen361005,FujianProvince,户R.China1Abstract:ApairofchiraIO.iminobenzosemiquinonatoFe(1lI)complexes,A-mer-[Fe(L18Q)3]and丑一met'-【Fe(L。)3】(L,sQ:2-phenylimino
5、一4,6·di-tert.butyIphenol,mer:meridianconfiguration),weresynthesizedfrom2.anilino-4,6.di.tert-butylphenol(H2L)andFeCI2·4H2O.TheirabsoluteconfigurationsweredeterminedbysinglecrystalX.raydifflraction(XRD)andsolid—statecirculardichroism(CD)spectra(thesamesinglecrystaJforXRDwasdi
6、spersedinKC0.Correlationsbetweentheabsoluteconfigurationsofthechiral—at—metaJO.iminobenzosemiquinonatoM(1lI)complexes[M(L。。)3】(M=CFe,Co)andlheirsolid—stateCDspectrawerealsoestablished.Comparisonbetweensolid—stateCDspectraofthebulksamplesfrom10diferentsynthesesandtheirsinglec
7、rystalswerethoroughlyanalyzed.Thesolid-stateCDspectraofthepowderedsamplesfrom10diferentcrystallizationsofoneproductwerecharactedzed.Thesestudiesindicatedthatmirrorsymmetrybreaking(MSB)occurredduringthecrystallizationprocessoftheFe(1l1)complexesandtheirenantiomericexcess(ee)v
8、alueswerebetween15%and10O%.KeyWords:SemiquinoneFe(1l1)complexes;Mirrorsymme
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