Syntheses and characterization of 3D heterometallic (3d–4f) metal–organic frameworks: Reversible de- and rehydration performance and magnetic properties

By the “metalloligand” strategy, two new 3d–4f heterometallic metal–organic frameworks (MOFs), {[Ln2Cu3(IDA)6] · 1.5H2O}n [Ln = Tb (1) and Dy (2); H2IDA = iminodiacetate acid], had been prepared. X-ray crystal structure analyses show that 1 and 2 possess of 3D frameworks with highly ordered 1D channels along the c axis. The highly stable skeleton and reversible de- and rehydration performance of 1 are demonstrated by thermogravimetric and powder X-ray diffraction analyses, and a low temperature magnetic study of 2 reveals a weak ferromagnetic interaction between the metal ions.

Two new 3d–4f heterometallic coordination polymers, {[Ln2Cu3(IDA)6] · 1.5H2O}n (Ln = Tb and Dy, H2IDA = iminodiacetate acid), as well as their structure are described here. The complexes show 3D frameworks with highly ordered 1D channels along c axis. The reversible de- and rehydration performance of the complexes is demonstrated by thermogravimetric and powder X-ray diffraction analyses, and a low temperature magnetic study reveals a weak ferromagnetic interaction in a Dy (III)–Cu (II) couple.Figure optionsDownload as PowerPoint slide