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- W2011886790 endingPage "7031" @default.
- W2011886790 startingPage "7020" @default.
- W2011886790 abstract "Abstract A new polyamine macrobicyclic compound was synthesised through a [1+1] “tripod–tripod coupling” strategy and using a Schiff base condensation reaction, followed by sodium borohydride reduction. The resulting compound is a heteroditopic cage (btpN 7 ) in which one of the head units is appropriate for the coordination of copper(II), whereas the other head is available for additional hydrogen‐bonding and electrostatic interactions with substrates. The acid–base behaviour of the new compound, the stability constants of its complex with the Cu 2+ ion and the association constants of the copper(II) cryptate with oxalate (oxa 2− ), malonate (mal 2− ), succinate (suc 2− ), maleate (male 2− ) and fumarate (fum 2− ) were determined by potentiometry at 298.2 K in aqueous solution and at an ionic strength of 0.10 mol dm −3 in KNO 3 . These studies revealed a clear preference of the receptor [CuH h btpN 7 H 2 O] (2+ h )+ for oxa 2− over the other dicarboxylate substrates. This arises from co‐operativity between metal–anion coordination and electrostatic and hydrogen‐bonding interactions, in accordance with the ideal size of this dicarboxylate, which allow it to take full advantage of the potential binding sites of the receptor. A qualitative indicator‐displacement study, in agreement with the potentiometric studies, demonstrated that the copper cryptate receptor can be used as a selective visual sensor for oxalate." @default.
- W2011886790 created "2016-06-24" @default.
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- W2011886790 creator A5036234113 @default.
- W2011886790 creator A5085815891 @default.
- W2011886790 creator A5087293411 @default.
- W2011886790 date "2011-05-06" @default.
- W2011886790 modified "2023-10-18" @default.
- W2011886790 title "Recognition of Oxalate by a Copper(II) Polyaza Macrobicyclic Complex" @default.
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- W2011886790 doi "https://doi.org/10.1002/chem.201100428" @default.
- W2011886790 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21557358" @default.
- W2011886790 hasPublicationYear "2011" @default.