Syntheses, structures and magnetic properties of one family of 3d–4f chiral metal-organic frameworks (MOFs) based on D(+)-camphoric acid

Abstract

The hydrothermal reactions of D (+)-camphoric acid ( D -H 2 Cam) and 1,10-phenanthroline (phen)/2,2′-bipyridine (2,2′-bipy) with the corresponding metal salts gave rise to eleven chiral 3d–4f heterometallic metal-organic frameworks (MOFs). Single-crystal X-ray diffraction measurements reveal that the crystal structures are isostructural, crystallizing in the orthorhombic space group P 2 1 2 1 2 1 and they exhibit unique three-dimensional chiral 6-connected frameworks involving 1D zigzag chains aligned parallel to the a axis and the 2D wave-like lanthanide layers, with the Schläfli symbol (4 9 · 6 6 ). Moreover, we have systematically investigated the magnetic behaviors of partial compounds. • Eleven chiral 3d-4f MOFs have been synthesized and characterized. • They exhibit unique 6-connected frameworks. • The magnetic behaviors have been systematically investigated. Eleven chiral 3d-4f Metal-Organic Frameworks constructed from D (+)-camphoric acid have been synthesized. The crystal structures exhibit unique three-dimensional chiral 6-connected frameworks. The magnetic behaviors have been systematically investigated.