Unusual Heteroleptic Selenite

  • ChemPubSoc Europe Logo
  • Author: ChemViews
  • Published Date: 09 July 2011
  • Source / Publisher: European Journal of Inorganic Chemistry/Wiley-VCH
  • Copyright: WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Unusual Heteroleptic Selenite

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New bonding modes in complexes that display interesting magnetic properties develop our understanding of molecular magnetism. Complexes of selenites and tellurites have displayed useful properties such as second-order nonlinear behavior, ferroelectricity, and piezoelectricity. In addition, when bridging two metal cations, these ligands permit magnetic exchange between paramagnetic centers.


A group of scientists led by Massimiliano Delferro, Northwestern University, USA, and Giovanni Predieri, University of Parma, Italy, report a new and unusual coordination mode (µ24O,O':O',O'') of the selenite group in the heteroleptic complex [{Ni(TMEDA)SeO3}2] (see picture). The two nickel ions are antiferromagnetically coupled with J = –25.7 ± 0.1 cm–1, in good agreement with DFT calculations.


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