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1、InorganicaChimicaActa376(2011)437–445ContentslistsavailableatScienceDirectInorganicaChimicaActajournalhomepage:www.elsevier.com/locate/icaSilver(I),mercury(II)andpalladium(II)complexesoffunctionalizedN-heterocycliccarbenes:Synthesis,structuralstudiesandcatalyticactivityQing-XiangLi
2、u⇑,Hui-LongLi,Xiao-JunZhao,Shu-ShengGe,Meng-ChaoShi,GangShen,YanZang,Xiu-GuangWangTianjinKeyLaboratoryofStructureandPerformanceforFunctionalMolecule,CollegeofChemistry,TianjinNormalUniversity,Tianjin300387,PRChinaarticleinfoabstractArticlehistory:AseriesofNHCsilver(I),mercury(II)an
3、dpalladium(II)complexes,[(1,3-diethylbimy)6Ag4I3]I(2),Received27December2010[(1-benzyl-3-picolylbimy)Ag2Br2]n(3),[(1-benzyl-3-picolylbimy)HgI(CH2CN)]2(4),{[(1-picolyl-3-npro-Receivedinrevisedform7July2011pylbimy)2Hg][Hg2I6]}n(5)and[(1,3-dipicolylbimy)PdCl]Cl(6),aswellasoneanionicco
4、mplex[1,3-dieth-Accepted7July2011ylbimidazolium]2[HgI4](1)(bimy=benzimidazol-2-ylidene),havebeenpreparedandcharacterized.Availableonline23July2011Interestingly,awindwheel-likeAg4I3arrangementin2isformed,1Dpolymericchaincontaining12-memberedmacrometallocyclesandquadrangleAg2Br2units
5、in3isgenerated,andthea-carbonatomKeywords:ofdeprotonatedacetonitrile([CH2CN])in4participatesincoordinationwithmercury(II)atom.IntheCarbenecrystalpackingsofcomplexes1–6,2Dsupramolecularlayersor3DsupramoleculararchitecturesareSilverMercuryformedviaintermolecularweakinteractions,incl
6、udingp–pinteractions,hydrogenbonds,C–HpPalladiumcontacts,weakHgIbondsandIIbonds.Additionally,thecatalyticactivityoftheNHCpalladium(II)Catalysiscomplex6inSuzuki–Miyauracross-couplingreactionwasstudied.Ó2011ElsevierB.V.Allrightsreserved.1.Introductionbeefficientcatalystsforso
7、meorganicreactions,suchasSuzuki–MiyauraandHeckcouplingreaction[9].SincethediscoveryofstablefreeN-heterocycliccarbene(NHC)WeareinterestedinfunctionalizedNHCligandsandtheir[1],metalcarbenecomplexesbasedonimidazol-2-ylidene(imy)ormetalcomplexes.Recently,somesilver(I)andmercury(II)com-
8、benzimidazol-2-ylidene(bim
