Secondary building units, nets and bonding in the chemistry of metal–organic frameworks

Abstract

This critical review presents a comprehensive study of transition-metal carboxylate clusters which may serve as secondary building units (SBUs) towards construction and synthesis of metal-organic frameworks (MOFs). We describe the geometries of 131 SBUs, their connectivity and composition. This contribution presents a comprehensive list of the wide variety of transition-metal carboxylate clusters which may serve as secondary building units (SBUs) in the construction and synthesis of metal-organic frameworks. The SBUs discussed here were obtained from a search of molecules and extended structures archived in the Cambridge Structure Database (CSD, version 5.28, January 2007) which included only crystals containing metal carboxylate linkages (241 references).

Kinetically tuned dimensional augmentation as a versatile synthetic route towards robust metal–organic frameworks

“…However, making robust MOFs with desired structure, porosity and internal surface properties has always been a challenge. Almost all MOFs, in particular moistureresistant MOFs constructed with high-valence metal ions, have been made from the 'one-pot' synthetic route, making it difficult to control the metal-containing nodes and therefore the topology of the MOF 16 .…”

Theoretical study of conformational disorder and selective adsorption of small organic molecules in the flexible metal-organic framework material MIL-53-Fe

“…8 While significant progress has been made in the rational design of new MOF materials with various topologies and chemical compositions in recent years, [9][10] generally, there is still a lack of molecular level information on the mechanisms of adsorption and sieving. Experimentally, highresolution powder X-ray diffraction (XRD), 11 neutron powder diffraction 12 and X-ray absorption fine structure spectroscopy 13 offer the potential to resolve the position of the guest in the host and the nature of their chemical interactions.…”

Crystal structure of poly[[(1,3-dimethyl-2-imidazolidinone-κ1O) zinc(II)]-μ-furan-2,5-dicarboxylato-κ4O,O′:O′′,O′′′], [Zn(C5H10N2O)(C6H2O5)], C22H24N4O12Zn2

“…So far, thousands of MOFs have been synthesized, which reveals the diversities of the compositions and structures. A MOF is generally constructed by the means of metal ion/metal cluster as the node and bidentate/multi-dentate organic molecules as the linkers [3,4]. Using the same metal, di erent organic linkers render di erent metal cluster and di erent structure in turn, such as Zn-tetramer of MOF-5 and Zn-dimer of Zn-HKUST-1 [5,6].…”