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Transition metal coordination complexes of chrysazin

DOI: 10.1039/C5CE00792E DOI Help

Authors: Patrick J. Beldon (University of Cambridge) , Sebastian Henke (University of Cambridge; Ruhr-Universität Bochum) , Bartomeu Monserrat (University of Cambridge) , Satoshi Tominaka (University of Cambridge; National Institute for Materials Science (NIMS)) , Norbert Stock (Christian-Albrechts-Universität) , Anthony K. Cheetham (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Crystengcomm , VOL 18 , PAGES 5121 - 5129

State: Published (Approved)
Published: May 2016
Diamond Proposal Number(s): 8521

Abstract: Eleven novel coordination compounds, composed of chrysazin (1,8-dihydroxyanthraquinone) and different first-row transition metals (Fe, Co, Ni, Cu), were synthesised and the structures determined by single-crystal X-ray diffraction. The synthetic trends were investigated using high-throughput synthesis under systematic variation of concentration and reagent stoichiometry: for complexes containing Co, Ni or Cu crystallisation was improved by low ligand[thin space (1/6-em)]:[thin space (1/6-em)]metal ratios, while the effect of concentration depended on the metal used. The compounds crystallise as discrete clusters, apart from two, which contain long Cu–O bonds which may allow the two compounds to be considered one-dimensional coordination polymers. One of these compounds shows a distance between aryl rings of less than 3.26 Å, which is shorter than that in graphite, suggesting applications as an organic–inorganic semiconductor. The compound was found to be insulating by single-crystal and powder AC-impedance measurements, and this result is discussed with reference to the electronic structure calculated using density-functional theory.

Subject Areas: Materials, Chemistry

Instruments: I19-Small Molecule Single Crystal Diffraction

Added On: 18/11/2016 15:56

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