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https://hdl.handle.net/2440/4336
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Type: | Journal article |
Title: | Metallocyclodextrins of 6A-(2-amino-ethyl-amino)-6A-deoxy-b-cyclodextrin: their formation and complexation of (R)- and (S)-tryptophanate in aqueous solution |
Author: | Sandow, M. Easton, C. Lincoln, S. |
Citation: | Australian Journal of Chemistry: an international journal for chemical science, 1999; 52(12):1151-1155 |
Publisher: | C S I R O PUBLISHING |
Issue Date: | 1999 |
ISSN: | 0004-9425 |
Abstract: | <jats:p> The binary metallocyclodextrins formed by 6A-(2-aminoethylamino)-6A-deoxy-β-cyclodextrin ([M(βCDen)]2+ where M2+ = Co2+ , Ni2+ , Cu2+ and Zn2+) are characterized by log(K/dm3 mol–1) = 12.000.05, 7.810.01, 8.370.03 and 8.520.07, respectively, in aqueous solution at 298.2 K and I = 0.10 mol dm–3 (NaClO4), where K is the stability constant. The ternary metallocyclodextrins formed by [M(βCDen)]2+ and (R)- and (S)-tryptophanate, [M(βCDen)(R)-Trp]+ and [M(βCDen)(S)-Trp]+ , are characterized by log(K/dm3 mol–1) = 8.710.06 and 8.540.07, 5.380.06 and 5.410.04, 8.200.04 and 7.860.02, and 5.790.01 and 5.790.05, respectively, when M2+ = Co2+ , Ni2+ , Cu2+ and Zn2+. These data are discussed together with those characterizing the less stable metallocyclodextrins formed by 6A-(3-aminopropylamino)-6A-deoxy-β-cyclodextrin.</jats:p> |
DOI: | 10.1071/CH99101 |
Published version: | http://dx.doi.org/10.1071/ch99101 |
Appears in Collections: | Aurora harvest 6 Chemistry publications Environment Institute publications |
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