An unprecedented zigzag-shaped heptanuclear ferric cluster: synthesis, structure and magnetism

作者：Yang Pei Pei^*; Kuang Wei Wei; Xu Yun; Li Shao Min; Han Tao

来源：Inorganic Chemistry Communications, 2014, 46: 187-190.

DOI：10.1016/j.inoche.2014.06.001

• Heptanuclear ferric cluster
• Crystal structure
• Zigzag shape
• Magnetic properties

The synthesis, crystal structure and magnetochemical characterization are reported for a new Fe-7(III) cluster, [Fe-7(III)(L)(4)(O2CPh)(8)(H2O)(2)]NO3 3CH(3)CN (1). Complex 1 was synthesized from the use of the potentially O,N,O,O tetradentate chelate, 3-(2-hydroxybenzylideneamino)propane-1,2-diol (H3L), in the presence of carboxylate groups. Inspection of the central core reveals that it contains two triangular subunits sharing a common vertex Fe2, and then the vertex Fe3 (Fe3A) is further bonded to Fe4 (Fe4A) by a mu(2)-O-alkoxide atom from the L3- ligand, generating the unprecedented zigzag arrangement heptanuclear Fe-7 unit. Variable temperature magnetic susceptibility studies for 1 reveal the presence of only antiferromagnetic exchange interactions. Complex 1 shows no evidence of slow relaxation behavior above 2.0 K.

• 出版日期2014-8
• 单位淮北师范大学