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1.
Thetrimolybdenumclusterswithgeneralformula[Mo3(μ3S)(μS)3(μdtp)(dtp)3L](dtp=(S2P(OC2H5)2)-,L=H2O,py,SC(NH2)2etc.)[1](referredtoasM1type[2]),and[Mo3(μ3S)(μS2)3(dtp)3]X(X=Cl,I)[3](referredtoasM2type),aretwomaintypesoftrimolybdenumclusterseverinvestigatedbyourresearchgroup.Aswehavealready…  相似文献   

2.
CompoundsformedfromCu ,AgandAuwithdithio lateligands ,suchasthedialkyldithiocarbamate (DTC) ,mercaptothiazoline (HMT)anddialkyldithiophosphates(DDP) ,haveplayedanimportantroleintechnology .1Cu(I) Sclustersalsohavebeenimplicatedinbiologyasan ti oxidants .2Thecuban…  相似文献   

3.
IntroductionInthelasttwodecadesintensivestudieshavebeencarriedoutonthemolybdenum (tungsten)chalcogenideclusters ,resultinginthediscoveryofseriesofmonomer ic ,polynuclearMo(W ) andMo(W ) heterometallicco mplexes .Triangular ,cubane ,octahedralaswellashex nuclear…  相似文献   

4.
Itiswellknownthatinnaturetheactivationandreductionofdinitrogeninairtoammoniaarecatalyzedbynitrogenaseatambienttemperatureandpressure.ThemaincomponentsoftheactiveclusterofMoFeproteininnitrogenaseareMcluster(MoFe7S9cluster)andPcluster(Fe8S8cluster)[1].Inthel…  相似文献   

5.
1 INTRODUCTIONCertaincoppercomplexeshavebeenshowntohaveunusualchemicalpropertiessuchasoxygentransfer,oxidativeadditionandhomogenouscatalytichydrogenation[1].Oxidativeadditionreactionsarekeystepsintheactivationofσbondsinagreatnumberofcatalyticprocess.Cop…  相似文献   

6.
1INTRODUCTIONOctacarbonyldicobaltisaveryconvenientstartingmaterialforthepreparationofalmostanycobaltcompound〔1〕.Thereactionso...  相似文献   

7.
1 INTRODUCTIONInoureffortstodevelopthelow-valenceMo-SRcompounds,wehavefoundanMo(0)-compound,〔Mo2(SR)2(CO)8〕2-,whichisobtainedfromthereactionofMo(CO)6withRS-inhighyield,possessesaninterestingtwo-electrontransferproperty.Numerouskindsofdinuclearmolybde…  相似文献   

8.
1 INTRODUCTIONDimolybdenumalkynecomplexes〔Mo2(μR1C≡CR2)(CO)4(η5C5H5)2〕canreactwithavarietyofreagentssuchasphosphines,thiols,elementalsulfur,Ru3(CO)12andCo2(CO)8〔1-4〕.Intheproductsthealkyneligandisusuallyretained.Sometimes,alkynescissionoccurs.Being…  相似文献   

9.
IntroductionResss[1,2]recentstudyresultsshowthattheFeMo-cofactorconsistsoftwocubanefrag-ments[Fe4S3]and[Fe3MoS3]boundbythree...  相似文献   

10.
1 INTRODUCTIONStudiesonMo-S(SR)compoundshavealwaysbeenanactiveresearchareabe-causeoftheexistenceandimportanceofMo-S(SR)bondinginmolybdenumen-zymes〔1〕inbiologicalsystemandthepotentialapplicationtomaterialsandcatalyst〔2〕.Inrecentyears,weareinterestedin…  相似文献   

11.
1 INTRODUCTIONAlthoughthebinuclearoxomolybdenum (V )compoundsofethylenedi aminetetraacetate (EDTA)chelateligandwerewidelystudiedduringlater 50s[1~ 4],thefirstsuchcrystalstructureofpotassiumsaltdidnotappearuntil1 967[5 ],andan otherstructureofsodiumsaltwasreportedi…  相似文献   

12.
IntroductionThesupramolecularcomplexeformedbytheweakinteractions (electrostaticinteraction ,hydrogenbonds ,vanderWaalsforce ,short rangeexclusionforce ,etc .)ofmorethantwosortsofspeciesisanorganizingentitythatusuallypossessesspecialstructureandfunction .1Sup…  相似文献   

13.
IntroductionDuringthepastdecades ,thedevelopmentoftheco ordinationchemistryofmolybdenum(VI)focusedonmet al oxygenclusterscharacterizedbyfascinatingstructural,electrochemical,catalytic ,magnetic ,medicinal,andphotophysicalproperties ,1whichareoffundamentaland…  相似文献   

14.
IntroductionSinceK pfdiscoveredthatdicyclopentadi enyltitaniumdichlorideexhibitedantitumouractionin1979,1alargenumberofcyclopentadienyltitaniumcom plexesbearingdifferentsubstituentshavebeensynthe sized .2 ,3Theexperimentaldatarevealedthat (Cp) 2 TiX2(X =halogen ,p…  相似文献   

15.
1 INTRODUCTIONAmethodofspacegrouprevisionbywhichthestructurefactorsofthelower symmetrystructurearegeneratedandthestructureisthensolvedfromthesimulatedintensitydatahasbeenrecentlyreported[1].Thismethodisnowappliedtotherevi sionofthespacegroupofthemetal cl…  相似文献   

16.
Polyoxometalates (POMs)containingKegginmoi etieshavebeenreceivingextensiveattentioninrecentyearsowingtotheirgreatfundamentalandpracticalinter est .1Especiallytheunusualelectronicproperty (highnegativecharges) ,oneofthemostimportantpropertiesofPOMs ,haspoten…  相似文献   

17.
胡茂林  林娟娟  缪谦  熊轶 《中国化学》2002,20(3):235-239
IntroductionThenitrilotriaceticacidisoneoftheimportantderivativesofglycine .Duringthelastdecade ,itstriva lentanion (NTA) ,asabridgingligand ,hasattractedwideattentionandbecomeoneofthesubjectofintensiveresearchforseveralreasons .1 6EachNTAhasthreecar boxylate…  相似文献   

18.
HYDROLYTICCLEAVAGEOFACMET-GLYPROMOTEDBYCIS-[Pd(MET)(D2O)2](NO3)2¥XiaoHuaCHEN;LongGenZHU;N.M.Kostic(CoordinationChemistryInsti...  相似文献   

19.
1 INTRODUCTIONRecentyearshavewitnessedamarkedincreaseintheliteratureintheuseofsele niumandtelluriumasbridgingandstabilizingligandssincetheyexhibitunusualstruc turalandreactivitypatterns.〔1〕Ourongoingresearchprogramaimedatexploringnewconvenientsynthetic…  相似文献   

20.
Crystal Structure and Spectroscopic Properties of[Ni(phen)3]Pic2.2CH3CN   总被引:1,自引:0,他引:1  
1 INTRODUCTIONIntheprocessofthepreparationofNi(Pic) 2 L(L =1 ,3 bis (2 formylphenoxy) 2 hydroxyl propanethiosemicarbazone )mixedcomplexwithphen,aredcrystalwasobtainedinacetonitrilesolution .However,theelementalanalysisresultsoftheredcrystalindicatedthatitisnotthe…  相似文献   

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