Unexpected stable dimerisation of an anionic imidopyrrolecarboxylate in polar solution |
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Authors: | Rether Carolin Verheggen Elisabeth Schmuck Carsten |
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Affiliation: | University of Duisburg-Essen, Faculty of Chemistry, Universitaetsstrasse 7, 45141 Essen, Germany. |
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Abstract: | The imidopyrrolecarboxylate 3(-) unexpectedly forms stable dimers (K(ass) = 130 M(-1) in CHCl(3)/DMSO, 1?:?1, v/v) despite the fact that two anions have to interact. The dimer is more stable than an analogous neutral amidopyrrolecarboxylic acid dimer (K(ass) < 10 M(-1)) underlining the importance of charged H-bonds compared to neutral ones. |
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