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Organic-soluble optically pure anionic metal complexes PPh4[M-III(S,S-EDDS)]center dot 2H(2)O (M = Fe, Co, Cr)
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Chmel, Nikola Paul, Howson, Suzanne E., Allan, Laura E. N., Barker, J., Clarkson, Guy J., Turner, S. S. and Scott, Peter (2010) Organic-soluble optically pure anionic metal complexes PPh4[M-III(S,S-EDDS)]center dot 2H(2)O (M = Fe, Co, Cr). Dalton Transactions, Vol.39 (No.11). pp. 2919-2927. doi:10.1039/b924787d ISSN 1477-9226.
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Official URL: http://dx.doi.org/10.1039/b924787d
Abstract
The first organic-soluble, optically and diastereomerically pure EDDS metal complexes have been synthesised. A number of synthetic approaches were attempted, but finally the tetraphenylphosphonium series emerged as providing readily accessible compounds of trivalent Cr, Fe and Co in reasonable yields via the silver salts without the need to perform ion-exchange chromatography. The species PPh4[M-III(S,S-EDDS)] are very soluble in methanol, acetonitrile and even THF but isolation was facilitated by addition of stoichiometric water giving the highly crystalline but still conveniently soluble title compounds. The structures of the three isomorphous crystals comprise H2O-bridged extended hydrogen bonded structures with large channels occupied by the counterion molecules. The magnetic properties and circular dichroism spectra are reported along with comparative data for water-soluble NH4[Fe-III(S,S-EDDS)]. Phase purity (and hence diastereomeric purity) in the paramagnetic systems is assessed through powder XRD. The practical utility of this type of compound was confirmed by optical resolution of (+/-)-[Ru-II(bpy)(3)]Cl-2.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
| Library of Congress Subject Headings (LCSH): | Metal complexes, Cations, Anions, Organic compounds -- Synthesis | ||||
| Journal or Publication Title: | Dalton Transactions | ||||
| Publisher: | Royal Society of Chemistry | ||||
| ISSN: | 1477-9226 | ||||
| Official Date: | 2010 | ||||
| Dates: |
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| Volume: | Vol.39 | ||||
| Number: | No.11 | ||||
| Number of Pages: | 9 | ||||
| Page Range: | pp. 2919-2927 | ||||
| DOI: | 10.1039/b924787d | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), University of Warwick |
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