Abstract
Synthesis and Characterization of 2-Butoxyethylxanthate Complexes with Iron(II), Cobalt(II), Nickel(II), Copper(II) and Zinc(II) and their Adducts with Nitrogen Base Ligands
Highlights
Transition matel complexes in which a 1,1-dithio ligand form a four membered ring with the metal ion have been extensively investigated and thoroughly reviewed (Coucouvanis, 1979; Bond and Martin,1984; Cox, et al.,1997; Therm,1994)
The resulting complex is significantly different from those of the complex not having the expanded coordination number (Magnus et al, 1994; Coucouvanis, 1979). 2-Boutoxyethylxanthates, S-2COR, comprise an important class of 1,1-dithiolate ligands with many applications ranging from flotation agent to radical polymerization (Coucouvanis,1970; Coucouvanis, 1979; Coote and Radom, 2004; Wan, et al, 2005; Tiekink and Haiduc, 2005)
The new ligand was prepared by the reaction of 2-butoxyethanol with potassium hydroxide and carbon disulphide: the complexes were prepared through direct reaction of the metal chlorides, FeCl2.4H2O, CoCl2.6H2O, NiCl2.6H2O, CuCl2. 2H2O or unhydrous ZnCl2 with the above ligand in (1:2) molar ratio
Summary
Transition matel complexes in which a 1,1-dithio ligand form a four membered ring with the metal ion have been extensively investigated and thoroughly reviewed (Coucouvanis, 1979; Bond and Martin,1984; Cox, et al.,1997; Therm,1994). The four membered ring metal complexes expand their coordination number by interaction with a lewis base. This may take place by adduct formation with other ligands of comparable ligating ability. We have described the preparation of some Fe(ІІ), Co(ІІ), Ni(ІІ), Cu(ІІ), Zn(ІІ) complexes containing 2-butoxyethyxanthate ligand and their adducts with nitrogen bases. The nitrogen bases stabilize the binary complexes. The isolated products are stable in air but their stability decreased markedly when dissolved in organic solvents
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