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Interactions of organic halide and nitrate salts with meso-octamethylcalix[4]pyrrole

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
1061-0278
23-28
Bates, Gareth W.
784ac62e-67f5-400a-ab9a-42615be9ec9d
Gale, Philip A.
c840b7e9-6847-4843-91af-fa0f8563d943
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
Bates, Gareth W.
784ac62e-67f5-400a-ab9a-42615be9ec9d
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), 23-28. (doi:10.1080/10610270601089378).

Record type: Article

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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More information

Published date: January 2008
Keywords: old, inclusion, pyrrole, anion-binding, cavity, crystallography, anion receptors, recognition, complexes, receptor, calixpyrroles

Identifiers

Local EPrints ID: 54420
URI: https://eprints.soton.ac.uk/id/eprint/54420
ISSN: 1061-0278
PURE UUID: 27305f6c-d5fb-4890-8ed1-506a7c0429ad
ORCID for Philip A. Gale: ORCID iD orcid.org/0000-0001-9751-4910
ORCID for Mark E. Light: ORCID iD orcid.org/0000-0002-0585-0843

Catalogue record

Date deposited: 05 Aug 2008
Last modified: 14 Mar 2019 01:48

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Contributors

Author: Gareth W. Bates
Author: Philip A. Gale ORCID iD
Author: Mark E. Light ORCID iD

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