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1.
Ferricoxide(αFe2O3),chromicoxide(αCr2O3)andtheirmixedcompoundshaveimportantapplicationinmanyfields.Forinstance,theycanbeusedascatalystsforhightemperaturewatergasshiftreaction[1]andreductionofNOxbyNH3[2],asrefractorymaterials[3]andsensingmaterials[4,5],andsoon.Sinc… 相似文献
2.
Asiswellknown,thetheoryfornonlinearpolymerizationswasinitiatedbyFloryandStockmayer[1—3].MillerandMacosko[4—6]proposedarecursivemethodfordealingwiththeproblemofthepostgelpropertiesofthenetworkformingpolymerization.Stepto[7]investigatedthegelgelreactionofRAft… 相似文献
3.
BasedonthecrystalstructuredatafromXrayanalysis[1,2]andthespectralpropertiesofeachchromophoreofCPC[3,4],Sauerandcoworkers[5,6]expectedthatthedynamicsofenergytransferprocessesshouldtakeplacewithin10—30pstimescalebetweentwotrimersofCPChexamer.Furthermore,Zhaoandco… 相似文献
4.
Recently,developmentandapplicationofdensityfunctionaltheory(DFT)arequiteattractivetoscientists’attention.Therelevantpapersareincreasingveryquickly[1—11].SincetheelectronegativityconceptwasproposedbyPauling[12]todescribethepowerofanatominamoleculetoattractel… 相似文献
5.
CrystalStructureof[La(NCS)_3(18-crown-6)(DMF)]MaoJiang-Gao(FujianInstituteofResearchontheStructureofMatter,AcademiaSinica,Fuzh?.. 相似文献
6.
Nathan S. Lawrence Timothy G. J. Jones Richard G. Compton Li Jiang . Physical Theoretical Chemistry Laboratory University of Oxford Oxford OX QZ UK . Schlumberger Cambridge Research High Cross Madingley Road Cambridge 《高等学校化学研究》2002,18(2):161-168
BackgroundHydrogensulphide ,acolourless ,flammablegaswithacharacteristicrotteneggodour ,occursexten sivelyinanumberofnaturalandindustrialenviron ments .Forexample ,itsabundanceinsubsurfacehy drocarbonreservoirsunderanaerobicconditions[1]mainlyresultsfromthei… 相似文献
7.
1 INTRODUCTIONSince1980,manyV/Fe/Sheterometallicsulfurclustercompoundshavebeenreported.RauchfussetalobtainedtwokindsofV/Fe/Scompounds[1]using(CH3C5H4)2V2S4asanorganometallicligand,oneis(MeCp)2V2Fe2(NO)2S4withacubanelikestructureandanotheris(MeCp)2V2S4Fe(NO)2and(MeCp)2V2S4… 相似文献
8.
GAO Jin sheng * MA Zhong guo YE Ling BU Wei ming MA Dong sheng YU Chang hua GE Yue FAN Yu guo 《高等学校化学研究》2001,17(1):63-68
IntroductionWehavereportedthesynthesisofdicarbonyl ( η5 2 ,4 cyclopentadien 1 yl)tricyclo hexylstannylironanditscrystalstructureshowsthatthemetal metalbond ,Sn—Fe ,existsinthemoleculeofthecomplex[1] .As ( η5 2 ,4 cyclopentadien 1 yl)di carbonylironheteronuclearbimetal… 相似文献
9.
Diazo compounds( 1 )andtheisomericdiazirines( 2 )areimportantsubstratesforsyntheticandmechanisticstudies ,particularlyforthestudyastheprecursorsofcarbenes[1] .CRR’N+ N-1CRR’NN2 Diazirinecompoundsdecomposeintonitrogenandthecorrespondingcarbenes .Forthethermaldec… 相似文献
10.
LI Bo * Yoshifumi KOIDE Kunio ESUMI . Toyota Central R & D Labs. Inc. Yokomichi Nagakute Aichi Japan . Departemnt of Applied Chemistry Institute of Colloid Interface Science Science University of Tokyo 《高等学校化学研究》2002,18(2):206-210
IntroductionInclusioncompoundshavebeennotedinrecentyearsandresorcinol typecalix [4 ]arenehasbeenstudiedfortheirinclusionabilitiesbyScheiderandBugleretal[1— 3] .Thepolyolmoietiesincalix[4 ]re sorcinareneformrigidhydrogen bondingnetworks[4 ] ,andcalix [4 ]resorcinare… 相似文献
11.
1 INTRODUCTIONThecoordinationchemistryofmulti substitutedoxamidesisofimportancetoawidevarietyofchemical[1 ] ,biological[1 ] andappliedsystems[2 ,3] .Themagnetic[4,5]andspectroscopic[6 ,7] propertiesoftheoxamidecomplexesareveryinteresting .Alotofmononuclearandbimetall… 相似文献
12.
1 INTRODUCTIONInrecentyears ,triazolo[3,4, b] 1 ,3,4 thiadiazolederivativeshavebeenat tractingmuchattentionfromchemistsandpharmacologistsbecausetheyshowbroadspectraofbiologicalactivities,suchasinsecticidal[1 ] ,antifungal[2 ] ,herbicidal[3] ,an tibacterial[4] ,hypotensiv… 相似文献
13.
IntroductionSeveralplantsofgenusAnaphalis(Compositae)havebeenphytochemicallystudied ,fromwhichflavanoids[1,2 ] ,helipyrone[3] ,chloroacetyleniccompoundswithadihydropyranorfuranring[4] andphthalideshavebeenreported[5 ] .A .sinicaHance ,distributedinChinaandalsofound… 相似文献
14.
Metaloxidesareonekindofmaterialofimportantapplications[1,2].Fortheclustermodelingofmetaloxideswithquantumchemicalmethods,thewaysgointothreegroups[3,4],i.e.thebareclustermodel,thesaturatedclustermodelandtheembeddedclustermodel.Thebareclustermodelissimplyasmal… 相似文献
15.
1 INTRODUCTIONTheα ,α ,α′,α′ tetraaryl 1 ,3 dioxolane 4,5 dimethanols (TADDOLS)diolswhicharereadilyavailablefromalkyltartrates ,havebeenwidelyusedaschiralligandsinenantioselectiveadditionreactionsofcarbon centerednucleophilestoaldehy des[1 ] ,in [2 +2 ]cycloadditions[2 ] … 相似文献
16.
Recently ,thedynamicsofenergytransferprocessestakingplaceinsolutionshasattractedmuchattention[1] .Liuandhisco workers[2 ] studiedtheenergytransferinbinarycollisionofwatermoleculesandpointedoutthatthewater waterinteractionwas“particularlyinterestingduetotheh… 相似文献
17.
IntroductionThiazolidino[3,4 c]oxazaborolidine ,asacatalyst,isusedintheenantioselectivereductionofprochiralke tones .1 4 AsshownintheexperimentbyLiandXie ,1thechiralityofreducedproductscatalyzedbythiazolidino[3,4 c]oxazaborolidineisoppositetothosebytheusualcat a… 相似文献
18.
Noncovalentinteractionsplayadominantroleindeterminingthestructuresandfunctionsforbiologicalmacromolecules.Forexample,ligandreceptorinteraction,enzymesubstratebindingandantigenantibodyrecognitionareallrelatedtothenoncovalentinteractions[1].Comparedtothem… 相似文献
19.
TheactivityofFe(naph)2Al(iBu)3CH2CHCH2Clcatalystishighinbutadienepolymerizationwithhydrogenatedgasolineassolvent[1].Thekineticsofthecatalysthasbeenstudiedasahomogeneouscatalyticsystem[2].However,thepreparativemethodsofthecatalystincludingratioandaddingordero… 相似文献
20.
Synthesis and Characterization of Heteropoly Coordination Compounds Containing Optical Ligands 总被引:1,自引:0,他引:1
TheheteropolyanionphasetransferchemistrycreatedbyPopeM .T .in 1 984hasopenedupanewfieldforheteropolycompoundresearch[1— 3] .Butsubstitutingcoordinationwatermoleculesbyorganicopticallyactiveligandhasnotbeenreportedinliteraturesuntil 1 997[4] .This papercoverssixhet… 相似文献