title: A nanoporous Ag-Fe mixed-metal-organic framework exhibiting single-crystal-to-single-crystal transformations upon guest exchange.
abstract: The reaction of solutions of Fe(Pyac)3 [PyacH=3-(4-pyridyl)-2,4-pentanedione] and AgNO3 produces two types of porous mixed-metal-organic frameworks (M'MOFs). With lower AgNO3 concentrations, the product (M'MOF1) has a 2D honeycomb structure with Ag:Fe=1:1 and pores of ca. 12x16 A. When a higher concentration of AgNO3 is employed, however, the product (M'MOF2) has Ag:Fe=3:2 and a porous 1D ladder structure. A variety of nonpolar solvents serve as guests in M'MOF2: with 1,2-C6H4Cl2, [AgNO3]3[Fe(Pyac)3]2(1,2-C6H4Cl2)5.5 (M'MOF2a); with C6H5Br, [AgNO3]3[Fe(Pyac)3]2(C6H5Br)6 (M'MOF2b). M'MOFs 2a and 2b can be interconverted by treatment with the appropriate solvent, in single-crystal-to-single-crystal transformations.
authors.affiliation: Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA.
authors.forename: Yixun
authors.initials: Y
authors.lastname: Zhang
authors.forename: Banglin
authors.initials: B
authors.lastname: Chen
authors.forename: Frank R
authors.initials: FR
authors.lastname: Fronczek
authors.forename: Andrew W
authors.initials: AW
authors.lastname: Maverick