Synthesis, Crystal Structures and Magnetic Properties of MIICuII Chains (M=Mn and Co) with Sterically Hindered Alkyl-Substituted Phenyloxamate Bridging Ligands
作者:Jesús Ferrando-Soria、Emilio Pardo、Rafael Ruiz-García、Joan Cano、Francisco Lloret、Miguel Julve、Yves Journaux、Jorge Pasán、Catalina Ruiz-Pérez
DOI:10.1002/chem.201002110
日期:2011.2.11
treating the corresponding anionic oxamatocopper(II) complexes [Cu(Lx)2]2− (x=1–3) with M2+ cations (M=Mn and Co) in DMF or DMSO as the solvent. The single‐crystal X‐ray structures of 2 a and 3 a reveal the occurrence of well‐isolated, zigzag, oxamato‐bridged manganese(II)–copper(II) chains. The intrachain Cu⋅⋅⋅Mn distances across the oxamato bridge are 5.3761(7) and 5.4002(17) Å for 2 a and 3 a, respectively
一系列通式的中性oxamato桥联的异链[MCu功能(L X)2(S)2 ] ⋅ p 小号⋅ q ħ 2 -O [ p = 0-1,q = 0-2.5; L 1 = N -2,6-二甲基苯基草酸酯,S = DMF,M = Mn(1 a)和Co(1 b); L 2 = N -2,6-二乙基苯基草酸酯,S = DMF,M = Mn(2 a)和Co(2b)或S = DMSO,M = Mn(2 c)和Co(2 d);L 3 = N-2,6-二异丙基苯基草酸酯,S = DMF,M = Mn(3 a)和Co(3 b)或S = DMSO,M = Mn(3 c)和Co(3 d)]是通过处理相应的阴离子而制备的草酸铜(II)与DMF或DMSO中的M 2+阳离子(M = Mn和Co)与[Cu(L x)2 ] 2-(x = 1–3)形成络合物。2 a和3 a的单晶X射线结构表明,出现了分离良好的,锯齿形的,恶