European Journal of Inorganic Chemistry

Cover image for Vol. 2017 Issue 19

Editor: Karen Hindson, Deputy Editor: Preeti Vashi

Impact Factor: 2.686

ISI Journal Citation Reports © Ranking: 2015: 12/46 (Chemistry Inorganic & Nuclear)

Online ISSN: 1099-0682

Associated Title(s): Angewandte Chemie International Edition, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemCatChem, Zeitschrift für anorganische und allgemeine Chemie

2009_16/2009Syntheses, Crystal Structures and Adsorption Properties of Ultramicroporous Coordination Polymers Constructed from Hexafluorosilicate Ions and Pyrazine (Eur. J. Inorg. Chem. 16/2009)

The cover picture The cover picture shows two crystal structures of porous coordination polymers, [Cu(SiF6)(4,4'bpy)2]n and [Zn(SiF6)(pyz)2]n (4,4'-bpy = 4,4'-bipyridine, pyz = pyrazine), which have been generated from square-grid coordination polymers that are cross-linked by ν-SiF6 anions. Although typical bridging ligands such as 4,4'-bpy and 1,4-benzenedicarboxylate produce open octahedral coordination polymers with micropores, such micropores need to be further narrowed to become ultramicropores (< 7 &angst;) for separation and purification of smaller gas molecules. We have succeeded in obtaining the ultramicroporous coordination polymer [Zn(SiF6)(pyz)2]n with 4.5 ± 4.5 &angst;2 pores by simply replacing 4,4'-bpy in [M(SiF6)(4,4'-bpy)2]n (M = Zn2+, Cu2+) with pyz. The ultramicropores of [Zn(SiF6)(pyz)2]n adsorb Me2CO rather than iPrOH, showing the size-exclusive effect. Additionally this compound shows a sharp uptake in H2 adsorption at 77 K, because the interaction potential is expected to be strong as a result of the synergistic effect of the neighbouring pore walls. Details are discussed in the article by K. Uemura et al. on p. 2329 ff.

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