Resolution of the Ethylenediamine bis oxalato cobaltate III Ion

Because the optically active forms of the (ethylenediamine)bis-(oxalato)cobaltate(III) ion have been, and will continue to be, excellent resolving agents for many cationic cobalt(III) complexes, it is only proper that a detailed resolution procedure be developed to produce both enantiomorphic forms in useful quantities. 

and Garvan have reported a general method for the resolution of [Co(en)(ox)2]. In their resolution procedure,1 they fail to indicate such data as volumes, yields, and 

Racemic sodium and calcium (ethylenediamine)bis(oxalato)-cobaltate(III) are prepared by the method given by Dwyer, Reid, and Garvan.1 

An alternate method has been developed by Harbulak and Albinak.3 

The m-[Co(en)2(N02)2]N02 is resolved by the method developed by Dwyer and Garvan4 using a fourfold increase in reagent quantities. 

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