Transformation of a chiral nanoporous bimetallic cyano-bridged framework triggered by dehydration/rehydration
(2009) Crystal Growth & Design — Vol. 9, n° 7, p. 3168-3176 (2009)
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- Abstract
- The syntheses, crystal structures, and adsorption/desorption properties of two novel chiral three-dimensional cyano-bridged bimetallic assemblies, {[Cu(1R, 2Rchxn) 2] 2[Ru(CN) 6] · 6H 2O} ∞ (1) and {[Cu(1R, 2Rchxn) 2] 12[Ru(CN) 6] 6 · 26H 2O} ∞ (2) (where 1R, 2Rchxn = trans-cyclohexane-(1R, 2R)-diamine), are reported. Complex 1 crystallizes in the monoclinic space group C2, with a =18.9979(11) Å, b = 17.8507(11) Å, c = 15.5853(8) Å, β = 119.062(4)°, V = 4619.9(4) Å 3, and Z = 4, while 2 crystallizes in the triclinic space group P1, with a = 13.7183(8) Å, b = 21.3378(12) Å, c = 24.4177(13) Å, α = 68.715(4)°, β = 78.284(4)°, γ = 73.004(5)°, V = 6331.3(6) Å 3, and Z = 1. Compounds 1 and 2 can be described as nanoporous cyano-bridged frameworks, in which alternating trans-[Cu-(trans-(1R, 2R-chxn)2]2+ cations and [Ru(CN)6]4-anions are linked via CN-bridges, and have threedimensional 6 6 diamondoid frameworks. In both structures there are large cavities filled with H 2O molecules which show guestdependent dynamic behavior. The chemical rearrangement of the framework is driven by the loss or addition of water molecules, as proved unequivocally by single-crystal and powder X-ray diffraction analyses. These changes are also fully reversible. The two types of frameworks reported show different behavior upon drying, falling within the category of "recoverable collapsing" and "guest-induced re-formation" framework materials. © 2009 American Chemical Society.
- Affiliations
ESRF, Grenoble (France) Chimie
Citations
Sereda, O., Stoeckli-Evans, H., Dolomanov, O., Filinchuk, Y., & Pattison, P. (2009). Transformation of a chiral nanoporous bimetallic cyano-bridged framework triggered by dehydration/rehydration. Crystal Growth & Design, 9(7), 3168-3176. https://doi.org/10.1021/cg801193r (Original work published 2009)