Bimetallic 2,4-Dichlorophenoxyacetates EU(III) and GD(III): Composition, Structure, and Luminescent Properties

The possibility of obtaining different structural types for gadolinium–europium heterometallic complexes by implementing the “structural type memory” effect is described. A series of seven Eu(III)/Gd(III) compounds with 2,4-dichlorophenoxyacetate, having the same composition but belonging to different structural types, was synthesized and structurally characterized. The photoluminescent properties of the obtained compounds were studied. It was shown that compounds crystallizing in the triclinic phase in the P-1 space group exhibit more effective photoluminescence than similar compounds in the monoclinic symmetry with the P21/n space group.