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Cube‐like 12‐MC‐4 and Offset Stacked 10‐MC‐3 Metallacrowns: Synthesis,Structure, and Magnetic Properties
Authors:Jian‐Hui Su  Hua Yang  Hai‐quan Tian  Da‐Cheng Li  Jian‐Min Dou
Abstract:Two complexes [MnIII4(naphthsao)4(naphthsaoH)4] ( 1 ) and [FeIII6O2(naphthsao)4(O2CPh)6] ( 2 ) [naphthsao = 1‐(1‐hydroxy‐naphthalen‐2‐yl)ethanone oxime] were obtained through the reactions of naphthsao ligand and MnCl2 · 4H2O or FeCl3 · 6H2O in the presence of triethylamine (Et3N). Their structures were determined by X‐ray single crystal diffraction, elemental analysis, and IR spectra. Complex 1 displays 12‐MC‐4 metallacrown structural type with cube‐like configuration and 2 shows an offset stacked 10‐MC‐3 structural type with the ring connectivity containing Fe–O–C–O–Fe–O–N–Fe–O–N. Magnetic susceptibility measurement reveals the ferromagnetic interactions and field‐induced slow relaxation of the magnetization for 1 , whereas out‐of‐phase signal is not observed for 2 .
Keywords:1‐(1‐Hydroxy‐naphthalen‐2‐yl)ethanone oxime  Metalacrown  Iron  Manganese  Magnetic properties
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