Nanoporous magnets of chiral and racemic [{Mn(HL)}2Mn{Mo(CN)7}2] with switchable ordering temperatures (TC = 85 K 106 K) driven by H2O sorption (L = N,N-dimethylalaninol)

Julie Milon (1) , Marie-Christine Daniel (2) , Abdellah Kaiba (2) , Philippe Guionneau (2) , Stéphane Brandès (3) , Jean-Pascal Sutter (1)

1 LCC - Laboratoire de chimie de coordination
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
3 ICMUB - Institut de Chimie Moléculaire de l'Université de Bourgogne [Dijon]

Molecule-based solids represent a rare opportunity to combine, adjust, and interrelate structural and physical functionalities to develop multifunctional materials. Here we report on a series of porous supramolecular magnets whose magnetic properties are related to their sorption state. A family of magnets of the formula [{Mn(HL)(H2O)}2Mn{Mo(CN)7}2]·2H2O have been obtained by assembling the heptacyano-metalate building unit {Mo(CN)7}4- with Mn(II) in the presence of protonated N,N-dimethylalaninol (L) as ligand, the latter being either as a racemic mixture or as a chiral R- or S-enantiomer...

Mots clés: Nanoporous materials; Supramolecular magnet; Sorption state; Magnetic properties; Chemical compounds

Domaines: Matériaux

Julie Milon, Marie-Christine Daniel, Abdellah Kaiba, Philippe Guionneau, Stéphane Brandès, et al.. Nanoporous magnets of chiral and racemic [{Mn(HL)}2Mn{Mo(CN)7}2] with switchable ordering temperatures (TC = 85 K 106 K) driven by H2O sorption (L = N,N-dimethylalaninol). Journal of the American Chemical Society, 2007, 129 (45), pp.13872-13878. ⟨10.1021/ja073612t⟩. ⟨hal-00186370⟩