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Synthesis and 83Kr NMR spectroscopy of Kr@C60

Synthesis and 83Kr NMR spectroscopy of Kr@C60
Synthesis and 83Kr NMR spectroscopy of Kr@C60
Synthesis of Kr@C60 is achieved by quantitative high-pressure encapsulation of the noble gas into an open-fullerene, and subsequent cage closure. Krypton is the largest noble gas entrapped in C60 using ‘molecular surgery’ and Kr@C60 is prepared with >99.4% incorporation of the endohedral atom, in ca. 4% yield from C60. Encapsulation in C60 causes a shift of the 83Kr resonance by −39.5 ppm with respect to free 83Kr in solution. The 83Kr spin-lattice relaxation time T1 is approximately 36 times longer for Kr encapsulated in C60 than for free Kr in solution. This is the first characterisation of a stable Kr compound by 83Kr NMR.
1359-7345
11284-11287
Hoffman, Gabriela
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Bacanu, George R.
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Marsden, Elizabeth
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Walkey, Mark
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Sabba, Mohamed
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Bloodworth, Sally
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Tizzard, Graham J.
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Levitt, Malcolm H.
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Whitby, Richard J.
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Hoffman, Gabriela
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Bacanu, George R.
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Marsden, Elizabeth
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Walkey, Mark
432139de-52cb-4e28-9ad0-b254e0523775
Sabba, Mohamed
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Bloodworth, Sally
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Tizzard, Graham J.
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Levitt, Malcolm H.
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Whitby, Richard J.
45632236-ab00-4ad0-a02d-6209043e818b

Hoffman, Gabriela, Bacanu, George R., Marsden, Elizabeth, Walkey, Mark, Sabba, Mohamed, Bloodworth, Sally, Tizzard, Graham J., Levitt, Malcolm H. and Whitby, Richard J. (2022) Synthesis and 83Kr NMR spectroscopy of Kr@C60. Chemical Communications, 2022 (80), 11284-11287. (doi:10.1039/D2CC03398D).

Record type: Article

Abstract

Synthesis of Kr@C60 is achieved by quantitative high-pressure encapsulation of the noble gas into an open-fullerene, and subsequent cage closure. Krypton is the largest noble gas entrapped in C60 using ‘molecular surgery’ and Kr@C60 is prepared with >99.4% incorporation of the endohedral atom, in ca. 4% yield from C60. Encapsulation in C60 causes a shift of the 83Kr resonance by −39.5 ppm with respect to free 83Kr in solution. The 83Kr spin-lattice relaxation time T1 is approximately 36 times longer for Kr encapsulated in C60 than for free Kr in solution. This is the first characterisation of a stable Kr compound by 83Kr NMR.

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Accepted/In Press date: 11 September 2022
Published date: 6 October 2022
Additional Information: Publisher Copyright: © 2022 The Royal Society of Chemistry.

Identifiers

Local EPrints ID: 471219
URI: http://eprints.soton.ac.uk/id/eprint/471219
ISSN: 1359-7345
PURE UUID: 21a65c22-0670-458c-9574-d2edadee76d9
ORCID for George R. Bacanu: ORCID iD orcid.org/0000-0003-0822-8643
ORCID for Mohamed Sabba: ORCID iD orcid.org/0000-0003-2707-1821
ORCID for Sally Bloodworth: ORCID iD orcid.org/0000-0003-2219-3635
ORCID for Graham J. Tizzard: ORCID iD orcid.org/0000-0002-1577-5779
ORCID for Malcolm H. Levitt: ORCID iD orcid.org/0000-0001-9878-1180
ORCID for Richard J. Whitby: ORCID iD orcid.org/0000-0002-9891-5502

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Date deposited: 31 Oct 2022 18:12
Last modified: 17 Mar 2024 04:06

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Contributors

Author: Gabriela Hoffman
Author: George R. Bacanu ORCID iD
Author: Elizabeth Marsden
Author: Mark Walkey
Author: Mohamed Sabba ORCID iD

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