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Single Isomer Heterometallic {CrIII6MII2} Rings Templated by Tetramethylammonium.
Alotaibi, Rajeh; Little, Edmund; Fowler, Jonathan M; Brookfield, Adam; Adams, Ralph W; Achari, Amritroop; Timco, Grigore A; Whitehead, George F S; Chilton, Nicholas F; Nair, Rahul R; Collison, David; Winpenny, Richard E P.
Afiliação
  • Alotaibi R; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Little E; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Fowler JM; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Brookfield A; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Adams RW; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Achari A; Department of Physics and Astronomy and National Graphene Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Timco GA; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Whitehead GFS; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Chilton NF; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Nair RR; Department of Physics and Astronomy and National Graphene Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Collison D; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
  • Winpenny REP; Department of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
Inorg Chem ; 60(20): 15675-15685, 2021 Oct 18.
Article em En | MEDLINE | ID: mdl-34613713
ABSTRACT
A family of heterometallic rings [Me4N]2[CrIII6MII2F8(O2CtBu)16] is reported using tetramethylammonium hydroxide pentahydrate as the source of a template, where M = Zn, Mn, Ni, and Co. The metal cores are octagons with metal-metal edges bridged by one fluoride and two carboxylate ligands. The divalent metal ions are found ordered at positions 1 and 5 in the octagon. The tetramethylammonium cations are above and below the metal plane of the ring in the crystal structure. Magnetic studies show antiferromagnetic coupling between the paramagnetic metal ions present, leading to paramagnetic ground states in each case. 1H NMR spectroscopy confirms that the structure of the {CrIII6CoII2} ring exists in solution, and electron paramagnetic resonance spectroscopy confirms the magnetic structure of the other three rings.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article
Texto completo
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article