Attempts Towards The Synthesis And Characterization Of Some Mixed Ligand Complexes Of Ni Cu And Cd

Visible sPGctra for solutions of i :bi y , i :bi-rn~y :.r ea , Ni :bipy : , , i : hun : , Ni ;phen :urea , Ni :phen :rn1111. , Cu :bipy , C.u :b i py :urea anc. CU :b i py : J, were recorded .rnFor the Ni c?mplexes the I ) max di d not hift with increasernin pH but the intersity de creased . For thernc01)per complexes l' ncrease l' n H SIll' fted the ' to .l:' 1' maxrnshorter 'i'lave l ength in the basic medium .rnThe synth sis was c arried out in aci i c medium.rn'I'he complex formed between Ni and b i py '. in t hernmolar r ntio 1 :1 COl1_d not be isolHted , but when thernconcentration cf bi y increased t wo times ink c ol oredrncrystals of th~ fu r Qula Ni(biPY)3C12 . 6H20 were isolatedrn. Jm attemp'c to synthesise a nickel mixed ligandrncomplex r.rith bipY :"Q. reG. and bi py :mal onamide was done ,rnbut in both cases Ni(bipY)3C12 . 6H20 was isol ated .rnThe binary cc,mplex Ni(phen) C12 06H20 was synthesrnlsed by the r eacti on of hen Rnd NiC12 . 6H20 . Thernsynthesis of the mixed ligHncl complex with hen :ur earnG.nd phen :malonamide was then tried but in both casesrnNi(phen) C12. 6H20 was the product .rn•Jhen CuC12 • 2H2O and bipy re cted in the mol arrnr tio 1 :1 at pH 4.5 Cu(bipy)C12 vJas is olc~ te butrnHhen the H was ad justed t o 7 • 0 a co lex -ith a probalernrnfor ula Cu ( bip~ (OH)C l . 3H20 v us isolate" .rnlin attempt vJaS maue to ynthesise tl e mixed I i andrncomplex of " co per ith bi ) :urea an b i py :malonamicle .rnIn both cases Cu (bipY)C12 was formed.rnThe b i nary compl exes of ur ea and malonami e v;'"i thrnco p er we r e syn"ches i se

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