trans-(dl-Isoleucinato-N,O)[tris(2-aminoethyl)amine-κ⁴N]cobalt(III) diperchlorate

The racemic title compound, trans-[N,N-bis(2-amino­ethyl)-1,2-ethanediamine-κ⁴N]­(dl-isoleucinato-N,O)­cobalt(III) di­per­chlor­ate, [Co(C₆H₁₈N₄)(C₆H₁₂NO₂)](ClO₄)₂, crystallizes in the enantiomorphous space group P2₁2₁2₁ with Z = 12 (Z′ = 3). Each of the three cations in the asymmetric unit represents a different chirality of the isoleucine ligand; two of them are R (or d) and the third is the S (or l) enantiomer. The mixture crystallizes in a so-called unbalanced crystallization, in which the cations adopt a chiral array of composition RRS or SSR, depending on the crystal selected for data collection.