Abstract
One 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.
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