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A 115In solid-state NMR study of low oxidation-state indium complexes

Hamaed, Hiyam; Johnston, Karen E.; Cooper, Benjamin F.T.; Terskikh, Victor V.; Ye, Eric; Macdonald, Charles L.B.; Arnold, Donna C.; Schurko, Robert W.

A 115In solid-state NMR study of low oxidation-state indium complexes Thumbnail


Authors

Hiyam Hamaed

Benjamin F.T. Cooper

Victor V. Terskikh

Eric Ye

Charles L.B. Macdonald

Donna C. Arnold

Robert W. Schurko



Abstract

115In solid-state NMR (SSNMR) spectroscopy is applied to characterise a variety of low oxidation-state indium(I) compounds. 115In static wideline SSNMR spectra of several In(I) complexes were acquired with moderate and ultra-high field NMR spectrometers (9.4 and 21.1 T, respectively). 115In MAS NMR spectra were obtained with moderate and ultra-fast (>60 kHz) spinning speeds at 21.1 T. In certain cases, variable-temperature (VT) 115In SSNMR experiments were performed to study dynamic behaviour and phase transitions. The indium electric field gradient (EFG) and chemical shift (CS) tensor parameters were determined from the experimental spectra. With the aid of first principles calculations, the tensor parameters and orientations are correlated to the structure and symmetry of the local indium environments. In addition, calculations aid in proposing structural models for samples where single crystal X-ray structures could not be obtained. The rapidity with which high quality 115In SSNMR spectra can be acquired at 21.1 T and the sensitivity of the 115In NMR parameters to the indium environment suggest that 115In SSNMR is a powerful probe of the local chemical environments of indium sites. This work demonstrates that 115In NMR can be applied to a wide range of important materials for the purpose of increasing our understanding of structures and dynamics at the molecular/atomic level, especially for the characterisation of disordered, microcrystalline and/or multi-valence solids for which crystal structures are unavailable.

Citation

Hamaed, H., Johnston, K. E., Cooper, B. F., Terskikh, V. V., Ye, E., Macdonald, C. L., …Schurko, R. W. (2013). A 115In solid-state NMR study of low oxidation-state indium complexes. Chemical Science, 5(3), 982-995. https://doi.org/10.1039/c3sc52809j

Journal Article Type Article
Acceptance Date Nov 27, 2013
Online Publication Date Nov 29, 2013
Publication Date Nov 29, 2013
Deposit Date Sep 30, 2016
Publicly Available Date Nov 27, 2018
Journal Chemical Science
Print ISSN 2041-6520
Electronic ISSN 2041-6539
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 5
Issue 3
Pages 982-995
DOI https://doi.org/10.1039/c3sc52809j

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