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Metal–organic frameworks constructed from Group 1 metals (Li, Na) and silicon-centered linkers

DOI: 10.1021/acs.cgd.8b01567 DOI Help

Authors: David Pugh (Imperial College London) , Emma Ashworth (Imperial College London) , Karen Robertson (Imperial College London) , Luke C. Delmas (Imperial College London) , Andrew J. P. White (Imperial College London) , Peter N. Horton (University of Southampton) , Graham J. Tizzard (University of Southampton) , Simon J. Coles (University of Southampton) , Paul D. Lickiss (Imperial College London) , Robert P. Davies (Imperial College London)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Crystal Growth & Design , VOL 19 , PAGES 487 - 497

State: Published (Approved)
Published: November 2018
Diamond Proposal Number(s): 2871

Abstract: A series of “light metal” metal–organic frameworks containing secondary building units (SBUs) based on Li+ and Na+ cations have been prepared using the silicon-centered linkers MexSi(p-C6H4CO2H)4-x (x = 2, 1, 0). The unipositive charge, small size, and oxophilic nature of the metal cations give rise to some unusual and unique SBUs, including a three-dimensional nodal structure built from sodium and oxygen ions when using the triacid linker (x = 1). The same linker with Li+ cations generated a chiral, helical SBU, formed from achiral starting materials. One-dimensional rod SBUs are observed for the diacid (x = 2) and tetra-acid (x = 0) linkers with both Li+ and Na+ cations, where the larger size of Na+ compared to Li+ leads to subtle differences in the constitution of the metal nodes.

Subject Areas: Chemistry

Instruments: I19-Small Molecule Single Crystal Diffraction