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- W2086570419 endingPage "1064" @default.
- W2086570419 startingPage "1059" @default.
- W2086570419 abstract "A pH titration study shows that 6A-((2-(bis(2-aminoethyl)amino)ethyl)amino)-6A-deoxy-β-cyclodextrin (βCDtren) forms binary metallocyclodextrins, [M(βCDtren)]2+, for which log(K/dm3 mol-1) = 11.65 ± 0.06, 17.29 ± 0.05, and 12.25 ± 0.03, respectively, when M2+ = Ni2+, Cu2+, and Zn2+, where K is the stability constant in aqueous solution at 298.2 K and I = 0.10 mol dm-3 (NaClO4). The ternary metallocyclodextrins [M(βCDtren)Trp]+, where Trp- is the tryptophan anion, are characterized by log(K/dm3 mol-1) = 8.2 ± 0.2 and 8.1 ± 0.2, 9.5 ± 0.3 and 9.4 ± 0.2, and 8.1 ± 0.1 and 8.3 ± 0.1, respectively, where the first and second values represent the stepwise stability constants for the complexation of (R)- and (S)-Trp-, respectively, when M2+ = Ni2+, Cu2+, and Zn2+. From comparisons of stabilities and UV−visible spectra, the binary and ternary metallocyclodextrins appear to be six-coordinate when M2+ = Ni2+ and Zn2+ and five-coordinate when M2+ = Cu2+. The factors affecting the stoichiometries and stabilities of the metallocyclodextrins, are discussed and comparisons are made with related systems." @default.
- W2086570419 created "2016-06-24" @default.
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- W2086570419 date "1996-01-01" @default.
- W2086570419 modified "2023-10-16" @default.
- W2086570419 title "Formation of Metallo-6<sup>A</sup>-((2-(bis(2-aminoethyl)amino)ethyl)amino)-6<sup>A</sup>-deoxy-β-cyclodextrins and Their Complexation of Tryptophan in Aqueous Solution" @default.
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- W2086570419 doi "https://doi.org/10.1021/ic9510831" @default.
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