Cobalt, tris racemization structure

Cobalt, tris(l,2-ethanediamine)-conformation, 1,25,197 polarography, 1,481 racemization, 1, 466 solid state, 1,466,467 reactions, 1, 27 redox potential, 1, 514 structure, 1, 67... 

Cobalt, tris(oxalato)-racemization solid state, 1, 467 structure, 1, 68... 

Bridged hydroxy complexes (208) of the bisoxalate type have been known for many years. Both a trihydrate and an anhydrous form are known. The trihydrate is isomorphous with the corresponding cobalt(III) complex (Durrant s salt) and the hydrous complex is slowly converted to the hydrate on exposure to moisture. Only a preliminary crystallographic characterization has appeared " it crystallizes as a meso rather than racemic complex. IR and magnetic studies are in accord with the hydroxy-bridged structure. Despite the crystallographic meso structure, the resolution of the complexes has been reported either photochemically or with cis- — )bis(ethylenediamine)dinitrocobalt(III) and leads to optically active complexes with spectra similar to those of the corresponding tris oxalate. 

The hexol cation in crystals of racemic tris[di-/i-hydroxobis(ethylene-diamine)cobalt]cobalt dithionate octahydrate (35) has the structure pre-... 

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