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1.
1 INTRODUCTIONWehaveshownaninterestinexopolyhedralcyclizationofmetalligandstocluster.AseriesofmetallaboranecompoundscontainingfivememberedringssuchasM-O-C-O-BandM-S-C-O-Baresynthesizedandcharacterized.Thegroupsofcyclizationincludeacetate〔1〕,benzoat…  相似文献   

2.
1INTRODUCTIONInrecentyears,aseriesoflanthanide aluminiumcomplexeswhichareactiveforpoly merizationofolfins〔1〕havebeenreported....  相似文献   

3.
1 INTRODUCTIONSulfoxideisknowntoformcoordinationcompoundswithLanthanide(Ⅲ)andtheirsyntheses,propertiesandvariousphysicalcharacteristicshavebeenreport-ed〔1~9〕.However,therearesomanydifficultyinpreparingthekindoflanthanidecomplexesbecausetheanionsuseda…  相似文献   

4.
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   

5.
1INTRODUCTIONInrecentyearsbiologicalyactiveorganoseleniumcompoundshavebeguntoat tractconsiderableinterestduetotheiruniqueandd...  相似文献   

6.
1INTRODUCTIONInrecentyears,higher nuclearityclustershavereceivedconsiderableatentionbecauseoftheirpotentialapplicationsinmany...  相似文献   

7.
1INTRODUCTIONRecentresearchonaseriesofdinuclearmolybdenum(0)carbonylcomplexescontain ingthiolato bridgeshasledtotheconclusion...  相似文献   

8.
NTRODUCTIONItisknownthatdialkylsulfidesareefectiveextractantsfortheextractionandsepara tionofnoblemetals〔1,2〕.Paladiumcomplex...  相似文献   

9.
1INTRODUCTIONSinceVanNiekerkandSchoening〔1〕firstdemonstratedthebinuclearnatureofcopper(Ⅱ)acetatemonohydrate,therehasbeenconsi...  相似文献   

10.
1INTRODUCTIONOctacarbonyldicobaltisaveryconvenientstartingmaterialforthepreparationofalmostanycobaltcompound〔1〕.Thereactionso...  相似文献   

11.
1INTRODUCTIONSinceRobsonhasputforwardtheconceptionofdinucleatingligandin1970〔1〕,dinuclearcomplexeshavereceivedmuchatentionfor...  相似文献   

12.
1 INTRODUCTIONThefirstpolyhedralruthenaboraneisstructurallytypifiedbythecompound〔(PPh3)2RuB10H8(OEt)2〕in1984〔1〕,whichisobtainedin40%yieldbythereactionoftheclosodecaboraneanionB10H102-with〔RuCl2(PPh3)3〕inethanol/chloroformsolution.Researchershavesy…  相似文献   

13.
1INTRODUCTIONRecently,thechemistryofcomplexescontaininglow valencemetalatomshasincreas inglyatractedtheatentionfromchemistsan...  相似文献   

14.
1INTRODUCTIONOrganolanthanidecomplexesinvolvingbothcyclopentadienylandβ diketonatochelateligandshavebeensynthesized〔1 4〕,ando...  相似文献   

15.
1 INTRODUCTIONResearchonSHGeffecthasbeenonaremarkablepositioninorganicnonlinearoptical(NLO)materialsfield.Theconjugateddelocalizedπelectronspossiblyresultinthesecond-orderNLOpropertyoforganiccompounds,soanumberofnitroanilinederivatives,suchas2-methyl…  相似文献   

16.
1 INTRODUCTIONInthedevelopmentoftransitionmetalclusters,agreatmanytetrahedron-typechiralclustershavebeensynthesized.Oneimportantreasonisthatsuchclusterscanbepotentiallyusedasasymmetriccatalystsintheprocesswhichistrulycluster-cat-alyzed〔1,2〕.However,t…  相似文献   

17.
1 INTRODUCTIONOwingtotheirpossibleimportantrolesinlifeprocesses,cubanetypetetranuclearmolybdenumclustershavebeenextensivelyexploredduringthepasttwodecades,ofwhichtheclustercompoundsthatcontain〔Mo4XS3〕(X=SorO)corehaveattractedspecialattention〔17〕.Asp…  相似文献   

18.
1INTRODUCTIONBenzodiazepinecompoundsareimportantpharmaceuticalagents〔1,2〕.Recentlyithasbeenfoundthatbenzodiazepinetricyclicde...  相似文献   

19.
1INTRODUCTIONInrecentyears,ithasfoundthatbenzothia/diazepinetricyclicderivativesarepo tentialpharmaceuticalagents〔12〕.Thus,we...  相似文献   

20.
1 INTRODUCTIONBiscyclopentadienyllanthanidechloridesforallthelanthanideelementshavebeensynthesizedandstructurallycharacterized〔1〕.Tert-butylcyclopentadienylisasuitableligandforpreparationoflanthanocenechlorides.Thesynthesesandmolecu-larstructuresof〔(…  相似文献   

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