A New Heterometallic 3d-3d Transition Metal Oxo-cluster {CuⅡ6MnⅢ}: Synthesis, Crystal Structure and Magnetic Property

作者：王译曼; 彭智炜; 廖嘉敏; 李澳; 刘元艳; 张璟婧; 周年; 李旭东; 李树; 孟维^*

来源：Chinese Journal of Structural Chemistry, 2021, 40(12): 1661-1667.

DOI：10.14102/j.cnki.0254-5861.2011-3229

A new transition metal-antimony oxo-cluster based compound has been synthesized in water under room temperature.Its formula is Na6[Cu6Mn Sb6(μ3-OH)2(OH)(μ4-O)6(tartrate)6]·20H2O (1),where tartrate represents rac-tartaric acid.It was characterized by elemental analysis,infrared spectrum and X-ray single-crystal diffraction.The compound crystallizes in the monoclinic system,space group P21/n.Structural analyses revealed that two Sb3(μ3-O)(tartrate)3 scaffolds sandwich a Cu6ⅡMnⅢ middle layer to form the cluster.In the middle layer,all the seven metal ions lie in an almost regular hexagon,with MnⅢ ion in the center and six CuⅡ ions along the edges of the hexagon.As a 4-connected node,each cluster is interlinked to its nearest four{Cu6Mn}neighbors through Na+,generating a 3D supramolecular framework.The temperature-dependent magnetic susceptibilities indicated dominating antiferromagnetic interactions in 1 with JCu–Cu=176.34 and JCu–Mn=–14.44 cm-1.