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Issue 29, 2018
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Stabilization of interpenetrating cluster-based frameworks promoted by N–H⋯X hydrogen bonds: synthesis, structures and properties of {[Cd(NH3)4]3[Re3Mo3Se8(CN)6]}X (X = Cl, Br and I)

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Abstract

Control of covalent coordination polymer structures using non-covalent interactions is a promising way for obtaining functional materials by self-assembly in solution. Here we report the crucial role of halide anions in the formation of interpenetrating frameworks based on cyanometalate clusters. It was found that the interaction of [Re3Mo3Se8(CN)6]5− cluster anions and Cd2+ cations in aqueous ammonia led to the formation of the 1D polymeric compound {[Cd(NH3)5]2[Cd(NH3)4]3[Re3Mo3Se8(CN)6]2}·5H2O (1). Compound 1 is unstable outside the mother liquor due to the rapid loss of NH3 and H2O molecules. Addition of KX (X = Cl, Br, I) to the reaction mixture led to selective formation of 3D framework compounds {[Cd(NH3)4]3[Re3Mo3Se8(CN)6]}X (2–4 for X = Cl, Br, I, respectively) stabilized by N–H⋯X hydrogen bonding. Compounds 2–4 demonstrate high thermal stability as well as reversible loss of ammonia and reversible oxidation in the solid state.

Graphical abstract: Stabilization of interpenetrating cluster-based frameworks promoted by N–H⋯X hydrogen bonds: synthesis, structures and properties of {[Cd(NH3)4]3[Re3Mo3Se8(CN)6]}X (X = Cl, Br and I)

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Publication details

The article was received on 05 Apr 2018, accepted on 13 Jun 2018 and first published on 13 Jun 2018


Article type: Paper
DOI: 10.1039/C8CE00527C
Citation: CrystEngComm, 2018,20, 4164-4172
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    Stabilization of interpenetrating cluster-based frameworks promoted by N–H⋯X hydrogen bonds: synthesis, structures and properties of {[Cd(NH3)4]3[Re3Mo3Se8(CN)6]}X (X = Cl, Br and I)

    V. K. Muravieva, Y. M. Gayfulin, P. Lemoine, N. G. Naumov and S. Cordier, CrystEngComm, 2018, 20, 4164
    DOI: 10.1039/C8CE00527C

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