A Direct Three-Component Reaction for the Isolation of a Nonanuclear Iron(III) Phosphonate

作者：Goura Joydeb; Liu Junjie; Goddard Paul^*; Chandrasekhar Vadapalli

来源：European Journal of Inorganic Chemistry, 2014, 2014(26): 4342-4348.

DOI：10.1002/ejic.201402371

• Cage compunds
• Magnetic properties
• Iron
• Phosphonates
• Moessbauer spectroscopy

The synthesis, structure, and magnetism of a nonanuclear iron(III) phosphonate, [Fe-9(III)(mu(3)-O)(4)(O3PC5H9)(3)(O2CCMe3)(13)]center dot(EtOH)(0.5)center dot(Et2O)(0.5) (1), is described. Compound 1 was obtained in the direct reaction of anhydrous ferric chloride, cyclopentylphosphonic acid, and pivalic acid in the presence of triethylamine. Compound 1 possesses a distorted icosahedral structure; nine of the vertices are occupied by Fe-III, whereas three others are occupied by the phosphorus atoms of the cyclopentylphosphonate ligand. Mossbauer spectroscopy of 1 confirms the presence of high-spin Fe-III. Low-temperature magnetic studies reveal the presence of strong antiferromagnetic coupling between the Fe3+ ions.

• 出版日期2014-9