Homoleptic isomeric forms

The reaction between Pd(acac)2 and lithium / -diketiminate, a nitrogen derivative of acac, gives a mixed-ligand and homoleptic complex. Interestingly, these complexes are stable at ambient temperature, but in acetonitrile solution they decompose to elemental Pd presumably due to reaction of Pd(II) and the acac ligand. Fmthermore, in pentane or ether solution the complex can isomerize into the thermodynamically stable form. Both isomers are similar, but their NMR spectra are inequivalent due to an asymmetric structure with nonrotating substituents. Since one of the imine groups is coordinated to the Pd ion, this isomerization results in the formation of a chiral center at the coordinated C atom. 

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