0000000001304372
AUTHOR
John E. Warren
Coordination polymer flexibility leads to polymorphism and enables a crystalline solid-vapour reaction: a multi-technique mechanistic study.
Despite an absence of conventional porosity, the 1D coordination polymer [Ag4 (O2 C(CF2 )2 CF3 )4 (TMP)3 ] (1; TMP=tetramethylpyrazine) can absorb small alcohols from the vapour phase, which insert into AgO bonds to yield coordination polymers [Ag4 (O2 C(CF2 )2 CF3 )4 (TMP)3 (ROH)2 ] (1-ROH; R=Me, Et, iPr). The reactions are reversible single-crystal-to-single-crystal transformations. Vapour-solid equilibria have been examined by gas-phase IR spectroscopy (K=5.68(9)×10(-5) (MeOH), 9.5(3)×10(-6) (EtOH), 6.14(5)×10(-5) (iPrOH) at 295 K, 1 bar). Thermal analyses (TGA, DSC) have enabled quantitative comparison of two-step reactions 1-ROH→1→2, in which 2 is the 2D coordination polymer [Ag4 (O2 …
Sponge‐Like Behaviour in Isoreticular Cu(Gly‐His‐X) Peptide‐Based Porous Materials
We report two isoreticular 3D peptide-based porous frameworks formed by coordination of the tripeptides Gly-L-His-Gly and Gly-L-His-L-Lys to Cu(II) which display sponge-like behaviour. These porous materials undergo structural collapse upon evacuation that can be reversed by exposure to water vapour, which permits recovery of the original open channel structure. This is further confirmed by sorption studies that reveal that both solids exhibit selective sorption of H2 O while CO2 adsorption does not result in recovery of the original structures. We also show how the pendant aliphatic amine chains, present in the framework from the introduction of the lysine amino acid in the peptidic backbo…
CCDC 931608: Experimental Crystal Structure Determination
Related Article: Carlos Martí-Gastaldo, John E. Warren, Michael E. Briggs, Jayne A. Armstrong, K. M. Thomas, Matthew J. Rosseinsky|2015|Chem.-Eur.J.|21|16027|doi:10.1002/chem.201502098
CCDC 1044598: Experimental Crystal Structure Determination
Related Article: Iñigo J. Vitórica-Yrezábal, Stefano Libri, Jason R. Loader, Guillermo Mínguez Espallargas, Michael Hippler, Ashleigh J. Fletcher, Stephen P. Thompson, John E. Warren, Daniele Musumeci, Michael D. Ward, Lee Brammer|2015|Chem.-Eur.J.|21|8799|doi:10.1002/chem.201500514
CCDC 1044595: Experimental Crystal Structure Determination
Related Article: Iñigo J. Vitórica-Yrezábal, Stefano Libri, Jason R. Loader, Guillermo Mínguez Espallargas, Michael Hippler, Ashleigh J. Fletcher, Stephen P. Thompson, John E. Warren, Daniele Musumeci, Michael D. Ward, Lee Brammer|2015|Chem.-Eur.J.|21|8799|doi:10.1002/chem.201500514
CCDC 1044597: Experimental Crystal Structure Determination
Related Article: Iñigo J. Vitórica-Yrezábal, Stefano Libri, Jason R. Loader, Guillermo Mínguez Espallargas, Michael Hippler, Ashleigh J. Fletcher, Stephen P. Thompson, John E. Warren, Daniele Musumeci, Michael D. Ward, Lee Brammer|2015|Chem.-Eur.J.|21|8799|doi:10.1002/chem.201500514
CCDC 1044596: Experimental Crystal Structure Determination
Related Article: Iñigo J. Vitórica-Yrezábal, Stefano Libri, Jason R. Loader, Guillermo Mínguez Espallargas, Michael Hippler, Ashleigh J. Fletcher, Stephen P. Thompson, John E. Warren, Daniele Musumeci, Michael D. Ward, Lee Brammer|2015|Chem.-Eur.J.|21|8799|doi:10.1002/chem.201500514
CCDC 931607: Experimental Crystal Structure Determination
Related Article: Carlos Martí-Gastaldo, John E. Warren, Michael E. Briggs, Jayne A. Armstrong, K. M. Thomas, Matthew J. Rosseinsky|2015|Chem.-Eur.J.|21|16027|doi:10.1002/chem.201502098