Isoreticular Metal-Organic Polyhedral Networks Based on 5-Connecting Paddlewheel Motifs
- Authors
- Chun, Hyungphil; Jung, Heejin; Seo, Jinwoo
- Issue Date
- Mar-2009
- Publisher
- American Chemical Society
- Keywords
- RETICULAR CHEMISTRY; TOPOLOGY; COORDINATION-FRAMEWORK MATERIALS; DESIGN; GAS-ADSORPTION; CATENATION; H-2 ADSORPTION; MOFS; HYDROGEN STORAGE; SORPTION PROPERTIES
- Citation
- Inorganic Chemistry, v.48, no.5, pp.2043 - 2047
- Indexed
- SCIE
SCOPUS
- Journal Title
- Inorganic Chemistry
- Volume
- 48
- Number
- 5
- Start Page
- 2043
- End Page
- 2047
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/41351
- DOI
- 10.1021/ic801784j
- ISSN
- 0020-1669
- Abstract
- A metal-organic polyhedral network with a unique 5-connected topology is expanded into a series using different metal ions or dicarboxylate ligands. The prototype material (ZmID), [Zn-4(MiP)(4)(dabco)(OH2)(2)] (mip = 5-methylisophthalate, dabco = diazabicyclo[2.2.2]octane), is based on 5-connecting paddlewheel motifs and possesses large cage-like pores (8-20 angstrom diameter). The metal ion is replaced by Co2+ and/or the dicarboxylate by isophthalate (ip) or 2,7-naphthalenedicarboxylate (2,7-ndc) to give isoreticular frameworks [Zn-4(ip)(4)(dabco)(OH2)(2)] (ZID), [Co4O4(dabco)(OH2)(2)] (CID), and [Zn-4(2,7-ndc)(4)(dabco)(OH2)(2)] (ZND). X-ray powder diffraction and gas sorption studies reveal that ZID and CID have sustainable pore structures and show higher N-2 uptakes than ZmID. ZND is found unstable with respect to the removal of guest solvents. ZmID, ZID, and CID are all similar in terms of the H-2 sorption capacities (1.4-1.5 wt % at 77 K and 1 bar) and isosteric heat of H2 adsorption (6-7 kJ/mol at low coverage).
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