Cadmium complexes acetylacetone

Chelates are often named merely as a complex, eg, cadmium complex with acetylacetone. A common practice ia the Hterature is to give the symbol of the central atom and an abbreviation for the ligand with or without an iadication of ionic charges, oxidation states, stmcture, or counterions, as ia the foUowiag Pb-EDTA, Cacit , Cu(en)2, Co(II)-(phen), [Cu(dipy)2]S04, [Ru(dipy)2(en)], and Na[Co(acac)2]. Ligand abbreviations are given ia Table 1. 

Structurally, complexes of malonaldehyde and acetylacetonate with Zn(R) ion show very similar Zn—O bond lengths . The cadmium complexes have similar structures but... 

SWV was used for the investigation of charge transfer kinetics of dissolved zinc(II) ions [215-218] and uranyl-acetylacetone [219], cadmium(II)-NTA [220] and mthenium(III)-EDTA complexes [221], and the mechanisms of electrode reactions of bismuth(III) [222], europium(III) [223,224] and indium(III) ions [225], 8-oxoguanine [226] and selenium(IV) ions [227,228]. It was also used for the speciation of zinc(II) [229,230], cadmium(II) and lead(II) ions in various matrices [231-235]. 

In solution, the monomer of anhydrous Co (AA) 2 apparently is tetrahedral (12), It is reasonable to expect that the monomeric j3-ketoenolate complexes of the alkali earth metals as well as manganese(II), iron(II), zinc(II), cadmium(II), and lead(II) also will be tetrahedral (18). However, in the solid state the manganese(II), iron(II) (19). and zinc(II) (6) complexes with acetylacetone apparently are polymerized (18). The cation B(AA)2" very likely also contains a tetrahedral BO4 unit. 

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