Molecular tectonics: control of reversible water release in porous charge-assisted H-bonded networks.
The combinations of bisamidium dicationic tectons 1-2H+ and 2-2H+ bearing two OH groups as additional H-bond donor/acceptor sites with [M(CN)6](3-)2 (M = Fe, Co, Cr) anions lead to the formation of robust porous crystals (decomposition temperature in the range of 240-300 degrees C) offering channels occupied by water molecules. The release and uptake of solvent molecules takes place through a reversible single crystal-to-single crystal transformation. Importantly, the temperature of dehydration can be increased by ca 40 degrees C through the decoration of the channels by introduction of OH groups on the backbone of the organic tecton.
Dechambenoit
Pierre
P
Laboratoire de Chimie de Coordination Organique, UMR CNRS 7140, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, F-67000 Strasbourg, France.
Ferlay
Sylvie
S
Kyritsakas
Nathalie
N
Hosseini
Mir Wais
MW