title: Postsynthetic Improvement of the Physical Properties in a Metal-Organic Framework through a Single Crystal to Single Crystal Transmetallation.
abstract: A single crystal to single crystal transmetallation process takes place in the three-dimensional (3D) metal-organic framework (MOF) of formula Mg(II) 2 {Mg(II) 4 [Cu(II) 2 (Me3 mpba)2 ]3 }⋅45 H2 O (1; Me3 mpba(4-) =N,N'-2,4,6-trimethyl-1,3-phenylenebis(oxamate)). After complete replacement of the Mg(II) ions within the coordination network and those hosted in the channels by either Co(II) or Ni(II) ions, 1 is transmetallated to yield two novel MOFs of formulae Co2 (II) {Co(II) 4 [Cu(II) 2 (Me3 mpba)2 ]3 }⋅56 H2 O (2) and Ni2 (II) {Ni(II) 4 [Cu(II) 2 (Me3 mpba)2 ]3 }⋅ 54 H2 O (3). This unique postsynthetic metal substitution affords materials with higher structural stability leading to enhanced gas sorption and magnetic properties.
authors: Instituto de Ciencia Molecular (ICMOL), Universitat de València, Paterna 46980, València (Spain).
authors: Thais
authors: T
authors: Grancha
authors: Department of Chemistry, Texas A&M University, College Station, TX 77842-3012 (USA). jesus.ferrando@uv.es.
authors: Jesús
authors: J
authors: Ferrando-Soria
authors: Department of Chemistry, Texas A&M University, College Station, TX 77842-3012 (USA).
authors: Hong-Cai
authors: HC
authors: Zhou
authors: Catalysis Engineering-Chemical Engineering Department, Delft University of Technology, Julianalaan 136, 2628 BL Delft (The Netherlands). j.gascon@tudelft.nl.
authors: Jorge
authors: J
authors: Gascon
authors: Catalysis Engineering-Chemical Engineering Department, Delft University of Technology, Julianalaan 136, 2628 BL Delft (The Netherlands).
authors: Beatriz
authors: B
authors: Seoane
authors: Laboratorio de Rayos X y Materiales Moleculares, Departamento de Física, Universidad de La Laguna, La Laguna 38201, Tenerife (Spain).
authors: Jorge
authors: J
authors: Pasán
authors: Institut Laue Langevin, Diffraction Group, Grenoble 38042 (France).
authors: Oscar
authors: O
authors: Fabelo
authors: Instituto de Ciencia Molecular (ICMOL), Universitat de València, Paterna 46980, València (Spain).
authors: Miguel
authors: M
authors: Julve
authors: Instituto de Ciencia Molecular (ICMOL), Universitat de València, Paterna 46980, València (Spain). emilio.pardo@uv.es.
authors: Emilio
authors: E
authors: Pardo
keywords: X-ray diffraction; gas sorption; magnetic properties; metal-organic frameworks; transmetalation