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

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)}5H(2)O (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-HX hydrogen bonding. Compounds 2-4 demonstrate high thermal stability as well as reversible loss of ammonia and reversible oxidation in the solid state.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01861427
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Submitted on : Friday, August 24, 2018 - 2:30:30 PM
Last modification on : Wednesday, November 20, 2019 - 6:04:01 PM

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Viktoria K. Muravieva, Yakov M. Gayfulin, Pierric Lemoine, Nikolay G. Naumov, Stéphane Cordier. Stabilization of interpenetrating cluster-based frameworks promoted by N-HX hydrogen bonds synthesis, structures and properties of {[Cd(NH3)(4)](3)[Re3Mo3Se8(CN)(6)]}X (X = Cl, Br and I). CrystEngComm, Royal Society of Chemistry, 2018, 20 (29), pp.4164-4172. ⟨10.1039/c8ce00527c⟩. ⟨hal-01861427⟩

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