简介:6,9,11-Trihydroxy-6a,12a-dehydrorotenoid1(coccineoneB)wassynthesizedfrom2-hydroxybenzaldehyde2andphloroglucinol.
简介:Quasiclassicaltrajectorycalculation(QCT)isusedfrequentlyforstudyingcollisionalenergytransferbetweenhighlyvibrationallyexcitedmoleculesandbathgases.Inthispaper,theQCToftheenergytransferbetweenhighlyvibrationallyexcitedC6F6andN2,O2andgroundstateC6F6wereperformed.TheresultsindicatethathighlyvibrationallyexcitedC6F6transferredvibrationalenergytovibrationaldistributionofN2,O2andgroundstateC6F6,sotheyareV-Venergytransfer.EspeciallyitismainlyV-VresonanceenergytransferbetweenexcitedC6F6andgroundstateC6F6,excitedC6F6transfersmorevibrationalenergytogroundstateC6F6thantoN2andO2.ThevaluesofQCT,-〈△Evib〉ofexcitedC6F6aresmallerthanthoseofexperiments.
简介:Thenovelcomplex[K(18-C-6)]2[Cd(mnt)2][18-C-6-18-crown-6,nmt=1,2-dicyanoethene-1,2-dithiolate,C2S2-(CN)2^2-]wassynthesizedandcharacterizedbyelementalanalysis,IRspectrumandX-raydiffractionanalysis.Thecomplexdisplaystwo-dimensionalnetworkstructureof[K(18-C-6)]complexsegmentsand[Cd(nmt)2]complexsegmentbridgedbyS-K-S,S-K-NandN-K-Ninteractionsbetweenadjacent[K(18-C-6)]and[Cd(mnt)2]units.
简介:有CuBr2和CdI2催化的公司的1-bromo-6-chlorohexane的Photopromotedcarbonylation在周围的条件下面被执行了。结果显示carbonylation在CuBr2的催化作用下面继续chloroesterClCH2(CH2)5COOCH3的主要产品。而且,carbonylation的活动能被基本添加剂的增加改进(NaOAc,Na3PO4或(n-C4H9)3N)。在这些添加剂之中,(n-C4H9)3N以ClCH2(CH2)5COOCH3的收益是最有效的。然而,代替BrCH2(CH2)5COOCH3的氯产品的methoxycarbonyl没面对CdI2被获得。这与monochloroalkane的carbonylation相当不同。
简介:DimerizationConstantDeterminationof6-O-Benzoyl-β-CyclodextrininAqueousSolution.DimerizationConstantDeterminationof6-O-Benzoyl?..
简介:Poly-3-methylthiophene(P3MT)在房间温度被综合离子的液体1-butyl-3-methylimi-dazoliumhexafluorophosphate([BMIM]PF6)由经常的潜在、经常的电流分别地。P3MT电影的结构和形态学被FTIR光谱和SEM描绘。undoped(减小)并且做(氧化)在离子的液体准备的P3MT电影的形式可逆、稳定。P3MT电影有维生素酸和罐头的electrocatalytic氧化的强壮的特征分开维生素酸和多巴胺的氧化山峰。潜在的步的二个方法被用来观察这部电影的反应时间,这部电影被发现有完美的electrochromic反应。
简介:AseriesofdoubleperovskitesRSrMnFeO_6(R=La,Pr,Nd,Sm)wassynthesizedundermildhydrothermalconditions.Crystalgrowthsofthesamplesweresensitivetoalkalinity,temperature,fillingfraction,andcompositionofinitialreactionmixture.ThedesiredseriesofcompoundsbelongstotheclassofAA'BB'O_6perovskiteswitharandomdistributionofMnandFeatomsovertheB-cationsub-lattice.TheirstructuresshowthedistortedorthorhombicsymmetrywithspacegroupPnma.TheshapesandsizesofthecrystalswereanalyzedonaRigakuJSM-6700Fbyscanningelectronmicroscopy.AnalysisdonebyXPS,MssbauerspectroscopyandiodometrictitrationrevealsthatMnandFeionshave+4and+3oxidationstates,respectively.
简介:Onenewsesquiterpenecompound,namely,illihenlactoneA(1),andonenewprenylatedC6–C3compound,illihenryioneH(2),alongwiththreeknownsesquiterpenes(3–5)wereisolatedfromthestemsofIlliciumhenryi.Thestructuresof1and2wereelucidatedbyspectroscopicevidenceincludingNMR,HRESIMSandcirculardichroism(CD).Compound2exhibitedaweakinhibitoryratioforbglucuronidasereleaseinducedbyplatelet-activatingfactor(PAF)inratpolymorphonuclearleukocytes(PMNs)invitro.