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Evaluating iodine uptake in a crystalline sponge using dynamic X-ray crystallography

DOI: 10.1021/acs.inorgchem.7b03218 DOI Help

Authors: William J. Gee (University of Bath; University of Kent) , Lauren E> Hatcher (University of Bath) , Christopher A. Cameron (University of Bath; Research Complex at Harwell) , Clare Stubbs (University of Bath) , Mark R. Warren (Diamond Light Source) , Andrew D. Burrows (University of Bath) , Paul R. Raithby (University of Bath; Research Complex at Harwell)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Inorganic Chemistry

State: Published (Approved)
Published: April 2018
Diamond Proposal Number(s): 13015

Abstract: The uptake of gaseous iodine into the crystalline sponge material [(ZnI2)3(tpt)2]·0.7triphenylene·0.3PhNO2·0.7C6H12 1 (tpt = 2,4,6-tris(4-pyridyl)-1,3,5-triazine) has been monitored by dynamic X-ray diffraction and thermogravimetric analysis. The X-ray analyses have enabled the location, quantity, uptake rate, and subsequent chemistry of the iodine upon inclusion into the pores to be determined. An uptake of 6.0 wt % (0.43 I2 per formula unit) was observed crystallographically over a period of 90 min before crystal degradation occurred. The included iodine molecules interact with the iodine atoms of the ZnI2 nodes at three different sites, forming coordinated I3– ions. The results contrast to recent observations on [(ZnI2)3(tpt)2] without the triphenylene guests which show the presence of I42– ions with low quantities of absorbed iodine.

Journal Keywords: Iodine; Absorption; Crystal structure; Molecules; Solvents

Subject Areas: Chemistry, Materials

Instruments: I19-Small Molecule Single Crystal Diffraction

Added On: 16/04/2018 08:52

Discipline Tags:

Radioactive Materials Chemistry Materials Science Metal-Organic Frameworks Inorganic Chemistry Metallurgy Organometallic Chemistry

Technical Tags:

Diffraction Single Crystal X-ray Diffraction (SXRD)