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1、??????????????????????????????????-2012????????????????????IraqiNationalJournalofChemistry,2012,volume47SynthesisandCharacterizationofBis-acylhydrazoneDerivativesasTetradentateLigandsandTheirDinuclearMetal(II)ComplexesMohammedM.Al-Ne'aimiCollegeofEnvironmentalMosulUniversity,Iraq(NJC)
2、(Receviedon26/2/2012)(Acceptedforpublication1/7/2012)AbstractTwonewbis-acylhydrazonewhereas1,4-diacetylbenzenebis(4-hydroxybenzoyl-hydrazone)(L1H2)and1,4-diacetylbenzenebis(4-nitrobenzoylhydrazone)(L2H2)ligandsbearingtwohydrazonesidegroupsandtheirmetal(II)complexeshavebeensynthesizeda
3、ndcharacterizedby1H-NMR,13C-NMR,elementalanalysis,FT-IRspectra,magneticsusceptibilitymeasurementsandUV-viselectronicabsorptionspectra.The(L1H2,L2H2)ligandsweresynthesizedbyreacting4-hydroxybenzohydrazideand4-nitrobenzohydrazidewith1,4-diacetylbenzene,respectively.Theligands(L1H2,L2H2)
4、reactwithanhydrousmetal(II)chloridestoformpolymericdinuclearmetal(II)complexeswithgeneralformula[{M2(Lx)2}n]withametaltoligandratioof1:1when[x=1,2;M=Co(II),Ni(II),Cu(II),Zn(II),Cd(II)].Inthecomplexes,theligandsactasdianionictetradentateandcoordinationtakesplaceintheenoltautomericformw
5、iththeenolicoxygenandazomethinenitrogenatomswhilethephenolichydroxylandnitrogroupsofdihyrazonemoietydonotparticipateincoordination.?????????????????????????????????????4,1-???????????????(4-??????????????????????)(L1H2)?4,1-???????????????(4-??????????????????)(L2H2)??????????????????
6、?????????????????????????????????????????????????????????????[NiII,CoII,CuII,ZnII,CdII]?????????????????????????????????????????(13C-NMR,1H-NMR)??????????????????????????(FT-IR)??????????????????????????-???????(U.V-visible)????????????????????(MagneticSusceptibility)?????????????????
7、?????(CHN)????????????????????????????????????????????????????????????????????????????????.?????????????????(L1H2)?(L2H2)???????4-?????????????????????4-????????????????(?????????????)??4.1-?????????????????????????.????????????????????????????????????????????????????????????(1:1)????
8、?????
