Formation of Stable Molecular Glasses of Yttrium(III) Acyl-DL-Alaninate Complexes

Yttrium(III) acylalaninate complexes such as tris(N-hexanoyl-DL-alaninato)yttrium(III) (=Y(hex-DL-ala)3) and tris(N-octanoylDL-alaninato)yttrium(III) (=Y(oct-DL-ala)3) form stable glassy states by an evaporation of solvent from the methanol solution. The trend of formation of the stable glassy state is sensitive to a difference in the acylalaninate ligands.