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

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 P2(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 Schlafli symbol (4(9) . 6(6)). Moreover, we have systematically investigated the magnetic behaviors of partial compounds. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.