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Issue 31, 2013
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Anion-dependent host–guest properties of porous assemblies of coordination complexes (PACs), [Cu(A)2(py)4] (A = PF6, BF4, CF3SO3, and CH3SO3; py = pyridine), based on Werner-type copper(II) complexes in the solid state

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Abstract

We report the syntheses and crystal structures of novel porous assemblies of coordination complexes (PACs) with/without guest molecules, α-[Cu(A)2(py)4] (α-PAC-2-A (A = PF6, BF4, CF3SO3, and CH3SO3); py = pyridine), γ-{[Cu(PF6)2(py)4]·2guest} (γ-PAC-2-PF6 ⊃ 2guest (guest = acetone and py)), γ-{[Cu(BF4)2(py)4]·2acetone} (γ-PAC-2-BF4 ⊃ 2acetone), and β-{[Cu(CH3SO3)2(py)4]·2.67H2O} (β-PAC-2-CH3SO3 ⊃ 2.67H2O). The single-crystal X-ray diffraction analyses of α-PAC-2-A show that α-PAC-2-A have dense packing structures, in which anions of the discrete coordination complexes form weak hydrogen-bonding and anion–π interactions. In contrast, γ-PAC-2-PF6 ⊃ 2guest, γ-PAC-2-BF4 ⊃ 2acetone, and β-PAC-2-CH3SO3 ⊃ 2.67H2O form guest-including structures with coordination environments around the CuII atoms similar to the α-forms. The vapour adsorption measurements for MeCN and acetone in α-PAC-2-A suggest that the adsorption associated with structural transformations is induced by weak Lewis-base PF6 and BF4 anions covered only with fluorine atoms, which weaken the host–host interactions.

Graphical abstract: Anion-dependent host–guest properties of porous assemblies of coordination complexes (PACs), [Cu(A)2(py)4] (A = PF6, BF4, CF3SO3, and CH3SO3; py = pyridine), based on Werner-type copper(ii) complexes in the solid state

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Publication details

The article was received on 27 Apr 2013, accepted on 31 May 2013 and first published on 03 Jun 2013


Article type: Paper
DOI: 10.1039/C3DT51104A
Citation: Dalton Trans., 2013,42, 11100-11110
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    Anion-dependent host–guest properties of porous assemblies of coordination complexes (PACs), [Cu(A)2(py)4] (A = PF6, BF4, CF3SO3, and CH3SO3; py = pyridine), based on Werner-type copper(II) complexes in the solid state

    S. Noro, K. Fukuhara, K. Sugimoto, Y. Hijikata, K. Kubo and T. Nakamura, Dalton Trans., 2013, 42, 11100
    DOI: 10.1039/C3DT51104A

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