A Family of Layered Chiral Porous Magnets Exhibiting Tunable Ordering Temperatures

作者：Atzori Matteo; Benmansour Samia; Minguez Espallargas Guillermo; Clemente Leon Miguel; Abherve Alexandre; Gomez Claramunt Patricia; Coronado Eugenio; Artizzu Flavia; Sessini Elisa; Deplano Paola; Serpe Angela; Mercuri Maria Laura^*; Gomez Garcia Carlos J

来源：Inorganic Chemistry, 2013, 52(17): 10031-10040.

DOI：10.1021/ic4010841

A simple change of the substituents in the bridging ligand allows ttming of the ordering temperatures, T-c, in the new family of layered chiral magnets A[M(11)Mm(X(2)An)(3)].G (A =. [(H3O)(phz)(3)r. (Phz = phenazine) or NBu4+; ?(2A1127 =,C6O4X22-,7 = 2,5-dihydroxy-1,4:benzoquinone derivative dianion, with M%26quot; = Cr, Fe; M%26quot; = Mn, Fe, Go, etc, X = Cl, Br, I, H, G.= Water Or acetone). Depending on the nature of X, an increase in T-c, from ca.: 5.5 to 6.3, %26apos;8.2, and :11.0 K -(for X = Cl, Br, I, and H; respectively) is observed in the MnCr derivatiVe. Furthermore, the presence of the chiral cation [(H3O)(phz)(3)](+), formed %26quot; by the aSsociation of a hydronium ion with three phenazine molecules, leads to a chiral structure where the A-RH30)(phz)3] + cations are %26quot; always located below the Delta-[Cr(Cl(2)An)(3)](3-) Centers, leading: to a very unusual localization of both kinds of metals (Cr and Mn) and to an eclipsed disposition of the layers. This eclipsed disposition generates hexagonal channels with a void volume of ca. 20% where guest molecules (acetone and water) can be reversibly absorbed. Here we Present the structural and magnetic characterization of this new family of anilatobased molecular Magnets.

• 出版日期2013-9-2