Facile synthesis of novel functionalized silsesquioxane nanostructures containing an encapsulated fluoride anion
Facile synthesis of novel functionalized silsesquioxane nanostructures containing an encapsulated fluoride anion
The presence of strongly electron withdrawing groups on alkoxysilanes, EWG-(CH2)(n)-Si(OEt)(3) (where n = 1-3 and the electron-withdrawing group EWG contains an Si-C(sp(3)) bond), facilitates the formation and encapsulation of the fluoride anion in a silsesquioxane cage. Such species have been studied by F-19 and Si-29 NMR spectroscopy and X-ray crystallography together with MALDI-TOP and ESI mass spectrometry, The EWG must not be a good leaving group. Interestingly, this strategy led only to the T-8 cage and excellent yields were obtained (81-95%) even without solvent. A wide range of functionalities were used. This new route offers an opportunity to build novel nanometer-sized 3-D molecular structures with a variety of functionalities which have not been accessible in the past.
6032-6040
El Aziz, Youssef
986fe8b4-3600-4439-b697-817a617d4fd8
Bassindale, Alan R.
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Taylor, Peter G.
e59508fd-4cfb-422c-bbb0-b70cfb6aa195
Horton, Peter N.
154c8930-bfc3-495b-ad4a-8a278d5da3a5
Stephenson, Richard A.
f92145c3-799d-4f3b-afe7-4d3fc7da8b30
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
10 September 2012
El Aziz, Youssef
986fe8b4-3600-4439-b697-817a617d4fd8
Bassindale, Alan R.
285ee4e0-58d0-4178-a0d9-d7e0d1efbebd
Taylor, Peter G.
e59508fd-4cfb-422c-bbb0-b70cfb6aa195
Horton, Peter N.
154c8930-bfc3-495b-ad4a-8a278d5da3a5
Stephenson, Richard A.
f92145c3-799d-4f3b-afe7-4d3fc7da8b30
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
El Aziz, Youssef, Bassindale, Alan R., Taylor, Peter G., Horton, Peter N., Stephenson, Richard A. and Hursthouse, Michael B.
(2012)
Facile synthesis of novel functionalized silsesquioxane nanostructures containing an encapsulated fluoride anion.
Organometallics, 31 (17), .
(doi:10.1021/om300277g).
Abstract
The presence of strongly electron withdrawing groups on alkoxysilanes, EWG-(CH2)(n)-Si(OEt)(3) (where n = 1-3 and the electron-withdrawing group EWG contains an Si-C(sp(3)) bond), facilitates the formation and encapsulation of the fluoride anion in a silsesquioxane cage. Such species have been studied by F-19 and Si-29 NMR spectroscopy and X-ray crystallography together with MALDI-TOP and ESI mass spectrometry, The EWG must not be a good leaving group. Interestingly, this strategy led only to the T-8 cage and excellent yields were obtained (81-95%) even without solvent. A wide range of functionalities were used. This new route offers an opportunity to build novel nanometer-sized 3-D molecular structures with a variety of functionalities which have not been accessible in the past.
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e-pub ahead of print date: 13 August 2012
Published date: 10 September 2012
Organisations:
Organic Chemistry: Synthesis, Catalysis and Flow
Identifiers
Local EPrints ID: 347316
URI: http://eprints.soton.ac.uk/id/eprint/347316
ISSN: 0276-7333
PURE UUID: a5fefcc3-2876-43cc-adee-be3697004f0b
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Date deposited: 21 Jan 2013 10:11
Last modified: 15 Mar 2024 03:04
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Contributors
Author:
Youssef El Aziz
Author:
Alan R. Bassindale
Author:
Peter G. Taylor
Author:
Peter N. Horton
Author:
Richard A. Stephenson
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