Interactions of organic halide and nitrate salts with meso-octamethylcalix[4]pyrrole
Interactions of organic halide and nitrate salts with meso-octamethylcalix[4]pyrrole
Proton NMR titrations have been performed with meso-octamethylcalix[4]pyrrole and a variety of organic chloride and bromide salts in dichloromethane-d2. The results show apparently increasing chloride stability constants within each set of anion salts (tetrabutylammonium < imidazolium < pyridinium). Addition of 1-ethyl-3-methylimidaolium (EMIM) nitrate to dichloromethane-d2 solutions of calix[4]pyrrole caused significantly larger downfield shifts of the pyrrole NH protons of calix[4]pyrrole than addition of equimolar quantities of tetrabutylammonium nitrate. The first crystal structure of a nitrate complex of a calix[4]pyrrole is also presented.
old, inclusion, pyrrole, anion-binding, cavity, crystallography, anion receptors, recognition, complexes, receptor, calixpyrroles
23-28
Bates, Gareth W.
9b7c0c2e-76a1-4e20-870e-1fdbfeeaa36e
Gale, Philip A.
c840b7e9-6847-4843-91af-fa0f8563d943
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
January 2008
Bates, Gareth W.
9b7c0c2e-76a1-4e20-870e-1fdbfeeaa36e
Gale, Philip A.
c840b7e9-6847-4843-91af-fa0f8563d943
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
Bates, Gareth W., Gale, Philip A. and Light, Mark E.
(2008)
Interactions of organic halide and nitrate salts with meso-octamethylcalix[4]pyrrole.
Supramolecular Chemistry, 20 (1 & 2), .
(doi:10.1080/10610270601089378).
Abstract
Proton NMR titrations have been performed with meso-octamethylcalix[4]pyrrole and a variety of organic chloride and bromide salts in dichloromethane-d2. The results show apparently increasing chloride stability constants within each set of anion salts (tetrabutylammonium < imidazolium < pyridinium). Addition of 1-ethyl-3-methylimidaolium (EMIM) nitrate to dichloromethane-d2 solutions of calix[4]pyrrole caused significantly larger downfield shifts of the pyrrole NH protons of calix[4]pyrrole than addition of equimolar quantities of tetrabutylammonium nitrate. The first crystal structure of a nitrate complex of a calix[4]pyrrole is also presented.
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Published date: January 2008
Keywords:
old, inclusion, pyrrole, anion-binding, cavity, crystallography, anion receptors, recognition, complexes, receptor, calixpyrroles
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Local EPrints ID: 54420
URI: http://eprints.soton.ac.uk/id/eprint/54420
ISSN: 1061-0278
PURE UUID: 27305f6c-d5fb-4890-8ed1-506a7c0429ad
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Date deposited: 05 Aug 2008
Last modified: 16 Mar 2024 03:16
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Author:
Gareth W. Bates
Author:
Philip A. Gale
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