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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Akitt, J. W. Lester, G. D. Greenwood, N. N. |
| Copyright Year | 1971 |
| Abstract | 27 Al and 31P n.m.r. have been used to measure quantitatively the formation of complexes between aluminium ions and the ionic and molecular species present in phosphoric acid. The results are consistent with the presence of both monomeric and polymeric species in aqueous phosphoric acid. Five 31P lines were observed at low temperatures in solutions of an aluminium salt in aqueous phosphoric acid and these are interpreted as arising, respectively, from the complex Al,H3PO43+, from exchanging Al,H2PO42+ and Al(H2PO4)2+, from two binuclear aluminium species, and from a series of polymeric phosphoric acid ligands Al(H3PO4)n, n 2, although in this latter case the state of protonation of the ligand is not known. The protons in the system undergo fast exchange at all temperatures where the samples are liquid. Addition of fluoride ion to these solutions results in the formation of eight new fluoro-phosphato-aluminium complexes containing direct Al–F bonds, in addition to the known binary complexes AlFn(3–n)+. These complexes were revealed by 19F n.m.r. spectroscopy. |
| Starting Page | 2450 |
| Ending Page | 2457 |
| Page Count | 8 |
| File Format | |
| ISSN | 00224944 |
| Volume Number | 0 |
| Journal | Journal of the Chemical Society A: Inorganic, Physical, Theoretical |
| DOI | 10.1039/J19710002450 |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Aluminium Acid Ligand Fluoride Ion Fluorine-19 nuclear magnetic resonance Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Inorganic Chemistry |
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