The Synthesis and characterization of a new macrocyclic extractive agent

The Synthesis and Characterization of a Hew Macrocyclic Extractive Agent The novel(E,E)-dioxime 5,6sl3,14-dibenzo-9,10-benzo[15-Crown-5j- 2,3-bis(hydroxyimino)-7,12-dioxo-l,4,8,ll-tetraazocyclodecane (H2L) has been synthesized by the reaction of ^'.S'-diamino benzol 15-Crown- 5] with N,N*-bis(2-carbomethoxyphenyl) diaminoglyoxlme. Only mono nuclear Co(III) and Ru(II) complexes with a metal-ligand ratio of 1:2 + have been isolated. The cobalt (III) complex bridged with BF2 is achieved with H-banded eobalt(III) complex and boron trifluoride ethyleter complex. The reaction of BF2 bridged cobalt(III) complex with bis(benzonitril) palladium(II) chloride give trinuclear complex. Then, this BF2 bridged cobalt (I II) complex has been used the extractions of some alkaline metal cations from aquauo media into dichloromethane and measured the capability of alkaline metal extractions. The structure of dioxime and its complexes one purposed 1 13 according to element el analysis, H and C WCR, IR and mass spectra data. Key Words: Vic-Dioxime, Crown ether, Macrocycle» extraction. VII