3-D Metal-Organic Framework Based on Cationic 2-D Cuprate Layers: Cu-3(OH)(4)[C10H6(SO3)(2)]

摘要

We describe herein a three-dimensional Cu(II) based metal-organic framework, copper hydroxide 2,6-naphthalenedisulfonate, Cu-3(OH)(4)[C10H6(SO3)(2)]. The compound contains embedded positively charged 2-D copper oxide layers. This higher dimensionality of inorganic connectivity leads to far greater thermal stability (375 degrees C vs 245 degrees C) over our previously reported three-dimensional metal-organic framework containing embedded 1-D cuprate chains. Single crystal data for this material are as follows: FW = 544.92, monoclinic, space group P2(1)/c, a = 13.549(5) angstrom, b = 5.503(2) angstrom, c = 9.512(4) angstrom, beta = 90.031(6)degrees, V = 709.2(5) angstrom(3), D-c = 2.552 g.cm(-3), and Z = 4. The structure, crystallinity, morphology, and properties of the material are discussed. The magnetic susceptibility exhibits a broad maximum centered at 80 K, indicative of low-dimensional antiferromagnetic interactions. Control of inorganic dimensionality embedded within an MOF is an often overlooked yet key feature in determining the stability and important properties of MOFs such as adsorption, conductivity, and magnetism.