简介：ＥＬＥＣＴＲＯＮ ＴＲＡＮＳＦＥＲ ＢＥＴＷＥＥＮ Ｅｕ３＋ ＡＮＤ Ｃｅ３＋ ＩＮ ＳｒＭｇＦ４ ＭＡＴＲＩＸＥＬＥＣＴＲＯＮＴＲＡＮＳＦＥＲＢＥＴＷＥＥＮＥｕ３＋ＡＮＤＣｅ３＋ＩＮＳｒＭｇＦ４ＭＡＴＲＩＸ￥ＹｉｎｇＷＵ；Ｃｈ...
简介：AseriesofTiO2-XSiO2[Xdenotesthemolarfraction(%)ofsilicainthemixedoxides]withdifferentn(Ti)/n(Si)ratioswaspreparedwithammoniawaterasahydrolysiscatalyst.ThephotocatalystspreparedwerecharacterizedbyXRD,thermalanalysis,FTIR,UV-VisandSPS.ThecharacterizationresultsofFTIRandUV-VisspectrashowthatTiatomsweregraduallychangedfromoctahedralcoordinationtotetrahedralcoordinationwiththeadditionofsilica,whichisnotbeneficialforobtainingstrongBrnstedacidityandhigherphotocatalyticactivity.Thephotocatalyticactivityexperiments,whichwereconductedbyusingheptane(orSO2)asthemodelreactant,showedthatTiO2-SiO2containingasuitableamountofsilicacanexhibitmuchhigherphotocatalyticactivitythanpureTiO2.Theenhancedphotocatalyticactivitycanbeattributedtothreefollowingfactors:(1)smallercrystallinesize;(2)higherthermalstability;(3)thenewstrongBrnstedacidity.
简介：Themonomericcobalt-phosphite-thiolatocomplex[Co(mpt)2{P(OCH3)3}2]BF4(Hmpt=2-mercaptothiazoline)hasbeenpreparedandcharacterizedbyX-raycrystallography.ThecomplexcrystallizesinthemonoclinicspacegroupC2/cwitha=0.8078(5),b=2.6020(18),c=1.2191(7)nm,β=99.38(1)°,V=2.528(3)nm3,andZ=4.Thestructurecomprisesdiscretecations[Co(mpt)2{P(OCH3)3}2.]+andanionsBF4-,inwhichthecobalt(Ⅲ)atomiscoordinatedtotwochelatempt-andtwoas-orientedmonodentateP(OCH3)3ligandsinahighlydistortedoctahedralgeometry.ThemostdistortedanglesareS(2)-Co(1)-S(2a)of162.23(10)°andN(1)-Co(1)-S(2)of71.47(13)°,thelatteriscausedbythegeometricconstraintofthebidentateligandmpt-.CyclicvoltammetryhasbeenusedtostudytheelectrochemicalbehaviorofthetitlecomplexontheRelectrodeinMeCNsolutionwith0.1mol·L-1ofBun4NBF4aselectrolyte.TheresultsindicatethatthetitlecomplexisunstableinMeCN.
简介：Thetitlecompounds5a-5cwerepreparedviathereactionofmethyl2-perfluoroal-kynoates(4)withmethyl5-oxo-4-(triphenylphosphoranylidene)hex-2-enoate(3),whichwasobtainedfromthereactionofmethylpropynate(2)withacetylmethylenetriphenylphosphorane(1)at-5-0℃.IntramoleculareliminationofPh3POtookplacewhencompound5washeatedinaqueousmethanolat115-120℃insealedtube,yieldingdimethyl2-trifluoromethyl-4-methylisophthalate(6a)from5aandmethyl5-acetyl-4-hydroxy-2-heptafluoropropanylbenzoate(6b)from5b,respectively.Thestructuresofcompounds5,6aand6bwereconfirmedbyIR,MS,1HNMR,19FNMRand13CNMRspectroscopyandelementalanalyses.Rectionmechanismsfortheformationofcompounds5,6aand6bwereproposed.
简介：Treatmentof4-amino-3-(1-aryl-5-methyl-1,2,3-triazol-4-yl)-5-mercapto-1,2,4-triazoles/2-amino-5-(1-aryl-5-methyl-1,2,3-triazole-4-yl)-1,3,4-thiadiazoleswithbenzaldehyde,acetoneandω-bromoacetophenonewastestedandcompared.ThetitlecompoundsSchiffbases,amides,imidazolo[2,1-b]-1,3,4-thiadiazolesand7H-s-triazolo[3,4-b]-1,3,4-thiadiazineshavebeenconfirmedbyelementalanalyses,^1HNMR,IRandMSspectra.AllthecompoundshavealsobeenscreenedfortheirantibacterialactivitiesagainstB.subtilis,S.aureusandE.coli.
简介：Anewμ3-Otriiron（Ⅲ）complex[Fe3O（OBz）6（CH3OH）3]（NO3）（CH3OH）2（HOBZ=benzoicacid）hasbeensynthesized,itsstructurehasbeendeterminedandvariabletemperaturemagneticsusceptilityhasalsobeenmeasured.Inthemolecule,threeironatomsformedanequilateraltrianglewithu3-Oincenter.ThefittingtothemagneticsusceptibilityshowedthatanintramolecularantiferromagneticexchangeinteractionoccurredbetweenironatomswithJ=-25.51cm-1,andaweakerintermolecularantiferromagneticexchangeinteractionoccurredwithzJ’=-2.30cm-1.
简介：Yb3+complexeswithtwonitrilotriaceticacidmoleculeswerepreparedandtheircompositionsweredeterminedasK3[Yb(nta)2(H2O)]*5H2OandNa3[Yb(nta)2]*6H2Obyelementalanalyses.Theirstructureswerecharacterizedbysingle-crystalX-raydiffractionanalyses.IncomplexK3[Yb(nta)2(H2O)]*5H2O,theYbN2O7partformsanine-coordinatemonocappedsquareantiprismaticstructure.IncomplexNa3[Yb(nta)2]*6H2O,theYbN2O6partformsaneight-coordinatesquareantiprismaticstructure.Itcanbeseenthattheoutercations(K+andNa+)greatlyaffectthecoordinationnumberandcoordinatestructurefromtheseresults.
简介：The2-C,methylenegroupof1-aroyl-1,2-dihydro-3H-naphtho[2,1-b]pyran-3-ones(2)havebeenshowedtopossessasuperiorreactivitytowardsmanyoforganicreagents.Thena-phthopyrones(2)condensedwitharomaticaldehydestogivethe2-arylidinederivatives(3).Bromin-ationof2gave1,2-dibromo(4)or5-bromo(5)derivativesdependingonthereactionconditions.Thebasecatalyzedadditionorcycloadditionofnaphthopyrones(2)to4-methoxybenzalacetophenonegavetheexpectedMichaeladduct(6)orthecyclicadducts(7-9)dependingonthetypeofcatalyticbaseandreactionconditions.Structuresoftheproductshavebeenestablishedbyelementalanalyses,IRand~1HNMRspectroscopicmethods.
简介：ThecrystalstructureofDi-nitratobis（ethylcaprolactam）uranyl（Ⅱ）UO2[CH2（CH2）4CONC2H5]2（NO3）2wasestablishedbyasingle-crystalX-raydiffractionstudy.Itistriclinie,spacegroupP1,witha=7.171（2）,b=8.655（3）,c=10.182（5）A,α=78.27（3）,β=70.63（3）,γ=81.76（3）°,V=581.7（4）A3,Z=l,Dc=1.94g.cm-3.FinalRvalueis0.0218.Theresultrevealsthaturanylioniscoordinatedtosixoxygenatoms,twoofthemarefromtwocarbonylgroupsofethylcaprolactamandtheotherfourarefromtwonitrategroups.
简介：Newphosphorus-andselenium-containingheterocyclyes,1,3,2,6-dioxaphosphaselena-cyclooctanes(la-1h),weresynthesizedbythereactionofbis(2-hydroxyethyl)selenidewithRP(X)Cl2whereR=alkoxyl,aroxyl,arylandX=Oorlonepair.Theirstructuresweredeterminedbyspectro-scopiesandelementalanalysesandfinallyconfirmedbytheX-raycrystallographicanalysisof1c.Themolecularstructuresoftheheterocycleswerediscussedintermofconformationalanalysis.
简介：[Co3(1,2-S2C6H4)3(PPh3)3][CoBr3(DMF)].sol(1,sol=CHCl3,O(C2H5)2,H2O)wasobtainedfromthereactionofCoBr(PPh3)3withNa2(S2C6H4)inchloroform.TheCo3coreinthecationof1exhibitsametal-metalbondedisoscelestriangle,inwhichthetwolongerCo-CobondsarebothbridgedbyS2C6H4ligandsontwosidesofthetriangleplanerespectively,whilethebottomshortCo-CobondisbridgedbythethirdbidentateS2C6H4ligand.Aseriesofpolynu-clearcobaltclustercompoundswithphosphine,thiolateand/orsulphurligandswerepreparedbylowoxidationstateCo+withthiolatesinorganicsolvents.Thesetri-,tetra-,hexa-,heptanuclearclustercompounds1-8withvarioustypesofcrystalstructurescanbeviewedasthecondensedpolynuclearcobaltcomplexesthatthecobaltatomframeworkswithsulphurbridgedwerebuiltthroughthesmalltriangularunitsof[Co3S3nL3](n=1,2)withorwithout[CoL](L=PR3,Br,Cl,5-C5H5)fragments.
简介：Thecrystalandmolecularstructuresof[(C3H7O)2PS2]2(CCDCNo.217201)weredeterminedbymeansofX-raycrystallography.ItcrystallizedinatriclinicsystemwithspacegroupP1^-andlatticeparametersa=0.82794(3)nm,b=0.84764(2)nm,c=0.85034(3)nm,α=97.78(3)°β=110.77(3)°,γ=94.95(3)°,V=0.54701(9)nm^3,Z=1.Inthismolecule,thetwodiisopropyldithiophosphategroups,[(C3H7O)2PS2]2,whichareparalleltoeachother,arelinkedbyanS--Sbondandthereexistinversioncentersinthemolecule,Inthestructure,theP=Sbondsinthetwodithiophosphateunitsaretrans-orientedtoeachother.
简介：Halfsandwichirondicarbonylcomplex[η5-C5H3(t-Bu)2]Fe(CO)2Cl(1)reactswith1,2-dilithiumdiselenocarboraneLi2Se2C2B10H10(2)togiveabinuclearironcarboranecomplex[η5-C5H3(t-Bu)2]2Fe2(CO)3*Se2C2B10H10(3).TheX-raydiffractionanalysisofcomplex3revealsthatoneoftheironatomsischiral.
简介：Thecopper(Ⅱ）complex[Cu3(nta)2(azpy)2(H2O2)]·6H2O(nta=nitrilotriacetate,azpy=4,4′-azobispyridine)hasbeensynthesizedandcharacterized.TheX-rayanalysisrevealsthattherearetwokindsofcopper(Ⅱ）coordinationenvironments.Cu(1)hasadistortedsquareplanesymmetryandCu(2)hasadistortedoctahedralsymmetry.Cu(1)islinkedtoCu(2)throughntaandboundtoCu(1C)byazpy,andCu(2)islinkedtoCu(2A)throughazpy,whichextendstotwo-dimensionalnetworkwithlargerhombus1.2nm×1.7nm.
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![Synthesis and crystal structure of [Co（mpt）<b style='color:red'>2</b>{P（OCH<b style='color:red'>3</b>）<b style='color:red'>3</b>}<b style='color:red'>2</b>]BF4 （Hmpt = <b style='color:red'>2</b>-mercaptothiazoline）](/image/thesis2 "Synthesis and crystal structure of [Co（mpt）<b style='color:red'>2</b>{P（OCH<b style='color:red'>3</b>）<b style='color:red'>3</b>}<b style='color:red'>2</b>]BF4 （Hmpt = <b style='color:red'>2</b>-mercaptothiazoline）")
![The structure and magnetic properties of μ<b style='color:red'>3</b>-oxotriiron（Ⅲ） complex [Fe<b style='color:red'>3</b>O（OBz）6（CH<b style='color:red'>3</b>OH）<b style='color:red'>3</b>]（NO<b style='color:red'>3</b>）（CH<b style='color:red'>3</b>OH）<b style='color:red'>2</b>](/image/thesis5 "The structure and magnetic properties of μ<b style='color:red'>3</b>-oxotriiron（Ⅲ） complex [Fe<b style='color:red'>3</b>O（OBz）6（CH<b style='color:red'>3</b>OH）<b style='color:red'>3</b>]（NO<b style='color:red'>3</b>）（CH<b style='color:red'>3</b>OH）<b style='color:red'>2</b>")
![Syntheses and Structural Researches of Yb^<b style='color:red'>3</b>＋ Complexes with Nitrilotriacetic Acids—Nine—coordinate K<b style='color:red'>3</b>[Yb（nta）<b style='color:red'>2</b>（H<b style='color:red'>2</b>O）]·5H<b style='color:red'>2</b>O and Eight—coordinate Na<b style='color:red'>3</b>[Yb（nta）<b style='color:red'>2</b>]·6H<b style='color:red'>2</b>O complexes](/image/thesis6 "Syntheses and Structural Researches of Yb^<b style='color:red'>3</b>＋ Complexes with Nitrilotriacetic Acids—Nine—coordinate K<b style='color:red'>3</b>[Yb（nta）<b style='color:red'>2</b>（H<b style='color:red'>2</b>O）]·5H<b style='color:red'>2</b>O and Eight—coordinate Na<b style='color:red'>3</b>[Yb（nta）<b style='color:red'>2</b>]·6H<b style='color:red'>2</b>O complexes")
![Synthesis of （S）-<b style='color:red'>2</b>-（<b style='color:red'>3</b>-Arylacrylamido）-<b style='color:red'>3</b>-{4-[<b style='color:red'>2</b>-（5-methyl-<b style='color:red'>2</b>-phenyloxazol-4-yl）ethoxy]phenyl}propanoic Acids](/image/thesis7 "Synthesis of （S）-<b style='color:red'>2</b>-（<b style='color:red'>3</b>-Arylacrylamido）-<b style='color:red'>3</b>-{4-[<b style='color:red'>2</b>-（5-methyl-<b style='color:red'>2</b>-phenyloxazol-4-yl）ethoxy]phenyl}propanoic Acids")
![A novel <b style='color:red'>2</b>-C reactivity studies of 1-aroyl-l,<b style='color:red'>2</b>dihydro-<b style='color:red'>3</b>H-naphtho[<b style='color:red'>2</b>,1-b]pyran-<b style='color:red'>3</b>-ones](/image/thesis8 "A novel <b style='color:red'>2</b>-C reactivity studies of 1-aroyl-l,<b style='color:red'>2</b>dihydro-<b style='color:red'>3</b>H-naphtho[<b style='color:red'>2</b>,1-b]pyran-<b style='color:red'>3</b>-ones")
![CRYSTAL STRUCTURE OF DI - NITRATOBIS（ETHYLCAPROLACTAM）URANYL（Ⅱ） UO<b style='color:red'>2</b>[CH<b style='color:red'>2</b>（CH<b style='color:red'>2</b>）4CONC<b style='color:red'>2</b>H5]<b style='color:red'>2</b>（NO<b style='color:red'>3</b>）<b style='color:red'>2</b>](/image/thesis10 "CRYSTAL STRUCTURE OF DI - NITRATOBIS（ETHYLCAPROLACTAM）URANYL（Ⅱ） UO<b style='color:red'>2</b>[CH<b style='color:red'>2</b>（CH<b style='color:red'>2</b>）4CONC<b style='color:red'>2</b>H5]<b style='color:red'>2</b>（NO<b style='color:red'>3</b>）<b style='color:red'>2</b>")
![[Co<b style='color:red'>3</b>（1,2-S<b style='color:red'>2</b>C6H4）<b style='color:red'>3</b>（PPh<b style='color:red'>3</b>）<b style='color:red'>3</b>]+, A basic triangle unit of some polynuclear molecules](/image/thesis13 "[Co<b style='color:red'>3</b>（1,2-S<b style='color:red'>2</b>C6H4）<b style='color:red'>3</b>（PPh<b style='color:red'>3</b>）<b style='color:red'>3</b>]+, A basic triangle unit of some polynuclear molecules")
![Crystal Structure of Bis （0, O＇-diisopropyl dithiophosphate） ： [（C<b style='color:red'>3</b>H7O）<b style='color:red'>2</b>PS<b style='color:red'>2</b>]<b style='color:red'>2</b>](/image/thesis14 "Crystal Structure of Bis （0, O＇-diisopropyl dithiophosphate） ： [（C<b style='color:red'>3</b>H7O）<b style='color:red'>2</b>PS<b style='color:red'>2</b>]<b style='color:red'>2</b>")
![Synthesis, Structure and Characterization of a Novel Asymmetrical Half-sandwich Binuclear Iron Carborane Complex [η5-C5H<b style='color:red'>3</b>(t-Bu)<b style='color:red'>2</b>]<b style='color:red'>2</b>Fe<b style='color:red'>2</b>(CO)<b style='color:red'>3</b>Se<b style='color:red'>2</b>C<b style='color:red'>2</b>B10H10](/image/thesis16 "Synthesis, Structure and Characterization of a Novel Asymmetrical Half-sandwich Binuclear Iron Carborane Complex [η5-C5H<b style='color:red'>3</b>(t-Bu)<b style='color:red'>2</b>]<b style='color:red'>2</b>Fe<b style='color:red'>2</b>(CO)<b style='color:red'>3</b>Se<b style='color:red'>2</b>C<b style='color:red'>2</b>B10H10")
![Synthesis,Structure and Characterization of Two—dimensional Network Copper Complex [Cu<b style='color:red'>3</b>（nta）<b style='color:red'>2</b>（azpy）<b style='color:red'>2</b>（H<b style='color:red'>2</b>O）<b style='color:red'>2</b>]·6H<b style='color:red'>2</b>O](/image/thesis17 "Synthesis,Structure and Characterization of Two—dimensional Network Copper Complex [Cu<b style='color:red'>3</b>（nta）<b style='color:red'>2</b>（azpy）<b style='color:red'>2</b>（H<b style='color:red'>2</b>O）<b style='color:red'>2</b>]·6H<b style='color:red'>2</b>O")
![Synthesis of Novel Binuclear Samarium Thiolate Complexes [（THF）<b style='color:red'>3</b>I<b style='color:red'>2</b>Sm（μ-SAr）]<b style='color:red'>2</b> （Ar=Ph, 4-Me<b style='color:red'>2</b>NC6H4） and Crystal Structure of [（THF）<b style='color:red'>3</b>I<b style='color:red'>2</b>Sm（μ-S-4-Me<b style='color:red'>2</b>NC6H4）]<b style='color:red'>2</b>](/image/thesis19 "Synthesis of Novel Binuclear Samarium Thiolate Complexes [（THF）<b style='color:red'>3</b>I<b style='color:red'>2</b>Sm（μ-SAr）]<b style='color:red'>2</b> （Ar=Ph, 4-Me<b style='color:red'>2</b>NC6H4） and Crystal Structure of [（THF）<b style='color:red'>3</b>I<b style='color:red'>2</b>Sm（μ-S-4-Me<b style='color:red'>2</b>NC6H4）]<b style='color:red'>2</b>")