Modular Assembling of [Zr(C 2 O 4 ) 4 ] 4− and [DabcoH 2 ] 2+ Units in Supramolecular Hybrid Architectures Including an Open Framework with Reversible Sorption Properties (Dabco = 1,4-Diazabicyclo[2. 2. 2]octane) - Université de Bretagne Occidentale Access content directly
Journal Articles Crystal Growth & Design Year : 2008

Modular Assembling of [Zr(C 2 O 4 ) 4 ] 4− and [DabcoH 2 ] 2+ Units in Supramolecular Hybrid Architectures Including an Open Framework with Reversible Sorption Properties (Dabco = 1,4-Diazabicyclo[2. 2. 2]octane)

Abstract

An emerging trend toward development of metal-organic frameworks (MOF) consists in using preformed complexes as building blocks able to assemble via coordination chemistry and/or charge-assisted H-bonding. Within this framework and depending only on the experimental conditions, reactions of the [Zr(C 2O4]4- anion with the [DabcoH2] 2+ dication (Dabco = 1,4-diazabicyclo[2. 2. 2]octane) selectively afford the compounds {K2(DabcoH2)[Zr(C2O 4)4]}·6.5H2O (1), {(DabcoH 2)2[Zr(C2O4)4]} ·3H2O (2), {(DabcoH2)2[Zr(C 2O4)4]}·5.5H2O (3), or {K2(DabcoH2)2[Zr2(C 2O4)7]}·6H2O (4). Three association schemes exhibiting drastically different network topologies have been characterized ranging from 1D to 3D; the fourth involving the in situ generated bimetallic (Zr2(C2O4) 7)6- moiety. For all four compounds, selective synthetic processes have been developed. In addition, compound 1 exhibits an open framework able to release solvates without collapsing. Besides the reversible sorption of small molecules like EtOH and MeCN, the open framework 1 was found to adsorb CO2 at ambient temperature and pressure (ca. 30 cm 3 of gas g-1 at 298 K), whereas its propensity to take up H2O from air is low
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hal-04631963 , version 1 (02-07-2024)

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Franck Thetiot, Carine Duhayon, Thengarai Venkatakrishnan, Jean-Pascal Sutter. Modular Assembling of [Zr(C 2 O 4 ) 4 ] 4− and [DabcoH 2 ] 2+ Units in Supramolecular Hybrid Architectures Including an Open Framework with Reversible Sorption Properties (Dabco = 1,4-Diazabicyclo[2. 2. 2]octane). Crystal Growth & Design, 2008, 8 (6), pp.1870-1877. ⟨10.1021/cg700971n⟩. ⟨hal-04631963⟩
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