Bis[(R)-3,5-dichloro-N-(1-phenylethyl)salicylideneaminato-κ2N,O]- copper(II) and bis[(R)-3-ethoxy-N-(1-phenylethyl)salicylideneaminato-κ2N,O]copper(II)

The title compounds, [Cu(C15H12Cl2NO)(2)], (I), and [Cu(C17H18NO2) (2)], (II), both adopt a compressed tetrahedral trans[ CuN2O2] coordination geometry, the molecules having an umbrella conformation overall. These complexes differ from one another with respect to the 1-phenylethylamine moieties, the direction of the benzene rings being either inside [ in ( I)] or inside and outside [ in ( II)] of the molecules. The crystals of ( I) and (II) have Delta(R, R) and Lambda(R, R) absolute configurations, respectively.