abstract
The hydrothermal synthesis of a new metal-organic framework (MOF) formulated as Cu(2)(4,4'-bpy)(2)SO(4) center dot 6(H(2)O), [abbreviation: (1); bpy or 4,4'-bpy=4,4'-bipyridine: SO(4)(2-) =sulfate group] has been reported. The structure of this MOF consists of Cu(+) nodes connected via 4,4'-bpy to form infinite chains, with two neighboring chains further bridged on the nodes by SO(4)(2-), resulting in a 1-D double chain network. Guest water molecules reside in between the chains and are hydrogen-bonded to the O and S atoms from the nearest sulfate groups, leading to the formation of a 3-D supramolecular framework. This MOF is good heterogeneous catalyst for the cyclopropanation of styrene, with high trans cyclopropane diastereoselectivity and was recycled and reused for three consecutive cycles without a significant loss of catalytic activity. (C) 2011 Elsevier Inc. All rights reserved.
keywords
COORDINATION POLYMER; CRYSTAL-STRUCTURES; HYDROTHERMAL SYNTHESES; MAGNETIC-PROPERTIES; ANION-EXCHANGE; CENTER-DOT; COMPLEXES; LIGANDS; CU(II)
subject category
Chemistry
authors
Shi, FN; Silva, AR; Rocha, J
our authors
acknowledgements
We acknowledge Fundacao para a Ciencia e a Tecnologia (FCT) for funding (PTDC/QUI/ 65805/2006, FCOMP-01-0124-FEDER-007424) and Fundo Social Europeu. F.-N. SHI and AR. Silva acknowledge FCT for Ciencia 2007 and 2008 programs, respectively.