Heterometallic Ln(III)–Cd(II) Complexes with Anions of Monocarboxylic Acids: Synthetic Approaches and Analysis of Structures and Photoluminescence Properties

The results of studying heterometallic complexes Ln(III)–Cd(II) with anions of aromatic and aliphatic monocarboxylic acids are generalized. A number of substantial features is observed in complexes Ln(III)–Cd(II), but they are not characteristic of compounds Ln(III)–М(II) with 3 d -metal ions (M = Co, Ni, Cu, Zn). A tendency of the cadmium(II) complexes to form coordination polymers at the compositions typical of the molecular 3 d -metal complexes is shown. The effect of the substituent in benzoic acid on the structures and photoluminescence properties of the heterometallic Ln(III)–Cd(II) complexes is revealed.