A new approach to prepare the Mn(II)-based magnetic refrigerant through incorporating diamagnetic Cd(II) ion

Publication date: Available online 13 February 2020Source: Inorganica Chimica ActaAuthor(s): Zhong-Yi Li, Xue-Qing Zhou, Rong-Rong Zhang, Xiang-Fei Zhang, Dong-Qing Wu, Bin ZhaiAbstractOne one-dimensional Cd(II)-Mn(II) heterometallic coordination polymer with 2-methylenesuccinate (MSA2-), [CdMn(MSA)2(H2O)5]·3H2O (1), has been successfully prepared and characterized. Single crystal X-ray diffraction analysis reveals that 1 crystallizes in monoclinic P21/c space group and has a 1D chain structure. The introduction of diamagnetic Cd(II) ion helps separate the neighboring Mn(II) ions well to prevent the strong Mn(II)-Mn(II) antiferromagnetic interaction. Magnetic studies show that 1 has a great cryogenic magnetocaloric effect with the maximum −ΔSm value of 21.93 J K−1 kg−1 at 2 K and ΔH =7 T. This is the first example for Cd(II)-Mn(II) based molecule magnetic refrigerant.Graphical abstractOne 1D Cd(II)-Mn(II) heterometallic coordination polymer was synthesized based on 2-methylenesuccinate ligand, and displays a large MCE with the maximum −ΔSm value of 21.93 J K−1 kg−1 at 2 K and ΔH =7 T.

Source: Inorganica Chimica Acta - February 13, 2020 Category: Chemistry Source Type: research