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Two Copper Coordination Polymers with Cage-Like 12-MC-4 Metallacrown and Linear Trinuclear Structures
Journal of Cluster Science ( IF 2.8 ) Pub Date : 2021-06-26 , DOI: 10.1007/s10876-021-02113-5
Wenhui Miao , Na Yang , Hua Yang , Jianmin Dou , Dacheng Li

Two novel coordination polymers {[Cu4(H2dam-dap)4(ClO4)2]·2ClO4}n (1) and [Cu3(H2dam-dap)2(N3)2(NO3)2]n (2) have been obtained through the copper salts and 3-(3-Amino-propylimino)-butan-2-one oxime (H3dam-dap) ligand, which was synthesized by one-pot reaction in the preparation process of complexes. Single-crystal X-Ray analysis shows that complex 1 displays a cage-like 12-MC-4 metallacrown structural unit with the sides exhibiting Cu–N–O repeat units, and the cage-like structures have been linked into one 1D chain by the bridges of ClO4 anions; 2 possesses trinuclear [Cu3(H2dam-dap)2]4+ unit with three Cu ion locating in a linear arrangement, and the adjacent trinuclear units are linked into a 2D coordination polymer by bridging nitrate anions. Magnetic studies reveal that 1 displays ferromagnetic coupling between metal centres, and 2 exhibits antiferromagnetic interaction and field-induced frequency-dependent behavior.



中文翻译:

具有笼状 12-MC-4 金属冠和线性三核结构的两种铜配位聚合物

两种新型配位聚合物{[Cu 4 (H 2 dam-dap) 4 (ClO 4 ) 2 ]·2ClO 4 } n (1) 和[Cu 3 (H 2 dam-dap) 2 (N 3 ) 2 (NO 3 ) 2 ] n (2) 已通过铜盐和 3-(3-Amino-propylimino)-butan-2-one 肟 (H 3 dam-dap) 配体获得,该配体是通过一锅反应合成的配合物的制备过程。单晶 X 射线分析表明,络合物1展示了一个笼状的 12-MC-4 金属冠结构单元,其侧面显示出 Cu-N-O 重复单元,并且笼状结构已通过 ClO 4 -阴离子的桥连成一个一维链;2具有三核[Cu 3 (H 2 dam-dap) 2 ] 4+单元,其中三个Cu离子呈线性排列,相邻的三核单元通过桥接硝酸根阴离子连接成二维配位聚合物。磁性研究表明,1表现出金属中心之间的铁磁耦合,2表现出反铁磁相互作用和场诱导的频率相关行为。

更新日期:2021-06-28
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