- Title
- Complexation of a four-strand tetraalcohol with labile metal ions probed by electrospray mass spectrometry
- Creator
- Lawrance, Geoffrey A.; Robertson, Mark J.; Sutrisno,; von Nagy-Felsobuki, Ellak I.
- Relation
- Inorganica Chimica Acta Vol. 328, Issue 1, p. 159-168
- Publisher Link
- http://dx.doi.org/10.1016/S0020-1693(01)00728-9
- Publisher
- Elsevier Science BV
- Resource Type
- journal article
- Date
- 2002
- Description
- The saturated, stereodefined tetraalcohol 2,3,5,6-endo,endo,endo,endo-tetrakis(hydroxymethyl)bicyclo[2.2.1]heptane (tetol, L¹) and the simple alcohol butane-1,3-diol (L²) form complexes with alkali metal ions (lithium, sodium, potassium, rubidium and caesium), alkali earth cations (magnesium, calcium, strontium and barium) and Ga(III) and Ce(IV) in aqueous solution, characterised by electrospray ionisation mass spectrometry (ESMS). Metal ion exchange between the Li⁺ complex of L¹ and the other metal ions is rapid, with a range of M(L¹)nm⁺ species detected, in addition to solvated species. With the alkal metal ions, M(L¹)⁺ and M(L¹)₂⁺ are dominant, although speciation varies with metal ion size. For the alkaline earth ions, a range of complex ions up to n=8 are observed, although n=1–3 dominate. A preference for M(L¹)₂²⁺ with Mg²⁺ versus M(L¹)₃²⁺ with Ca²⁺ may again relate to a larger ion size. For the higher-charged Ga(III) and Ce(IV), hydroxo species M(OH)(L¹)n(m⁻¹)⁺ are dominant reflecting bulk solution behaviour, which the ESMS studies appear to map generally.
- Subject
- polyalcohol; alkali metal ions; alkaline earth metal ions; metal complexes; electrospray ionisation mass spectrometry
- Identifier
- http://hdl.handle.net/1959.13/33620
- Identifier
- uon:3253
- Identifier
- ISSN:0020-1693
- Language
- eng
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