Phosphinic Acid Based Linkers: Building Blocks in Metal–Organic Framework Chemistry. Issue 18 (23rd March 2018)

• Record Type: Journal Article
• Authors: Hynek, Jan; Brázda, Petr; Rohlíček, Jan; Londesborough, Michael G. S.; Demel, Jan
• Is Part Of: Angewandte Chemie international edition. Volume 57:Issue 18(2018)
• Page Start: 5016
• Page End: 5019
• Publication Date: 2018-03-23
• Subjects: coordination polymers -- electron diffraction -- iron -- metal–organic frameworks -- phosphinic acids; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201800884
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Metal–organic frameworks (MOFs) are a chemically and topologically diverse family of materials composed of inorganic nodes and organic linkers bound together by coordination bonds. Presented here are two significant innovations in this field. The first is the use of a new coordination group, phenylene‐1, 4‐bis(methylphosphinic acid) (PBPA), a phosphinic acid analogue of the commonly used terephtalic acid. Use of this new linker group leads to the formation of a hydrothermally stable and permanently porous MOF structure. The second innovation is the application of electron‐diffraction tomography, coupled with dynamic refinement of the EDT data, to the elucidation of the structure of the new material, including the localization of hydrogen atoms. Abstract : A new MOF family : A reaction of FeCl3 with a bisphosphinate ligand leads to a metal–organic framework (MOF) with a hexagonal array of linear channels and two nonporous coordination polymers. The MOF displays high chemical and thermal stability. The structures were solved by ab initio methods using electron diffraction tomography data. All hydrogen atoms in the nonporous structures and seven out of fifteen hydrogen atoms in the MOF structure were localized.