Paper: Cu2[o-Br-C6H3(CO2)2]2(H2O)2·(DMF)8(H2O)2:  A Framework Deliberately Designed To Have the NbO Structure Type

Authors: M. Eddaoudi, J. Kim, M. O'Keeffe, and O. M. Yaghi

Citation: J. Am. Chem. Soc., 2002, 124, 376-377

DOI: 10.1021/ja017154e

Abstract: The synthesis of an NbO-type metal−organic framework was achieved by design:  o-Br-BDC (BDC = benzenedicarboxylate) was used to direct the formation of Cu2(CO2)4 paddle wheel units at 90° to each other and thus yield the target network. The compound was formulated as Cu2[o-Br-BDC]2(H2O)2·(DMF)8(H2O)2 (MOF-101) and characterized by single-crystal X-ray diffraction [cubic, space group Imm (No. 229) with a = 21.607(3) Å, = 10088(2) Å3Z = 6], which fully confirmed the presence of the expected structure. Despite having very large apertures and voids, MOF-101 has a noninterpenetrated structure, an intriguing observation that is discussed in the context of dual structures.