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1D and 2D NMR Investigations of the Jump Mechanism of Co II Ions in [12]Crown‐4 Stacks
Author(s) -
Dickert Franz L.,
Gmeiner Wolfgang,
Gumbrecht Walter,
Meissner Harald
Publication year - 1987
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198702281
Subject(s) - ion , molecule , mechanism (biology) , chemistry , chemical physics , jump , ligand (biochemistry) , crystallography , physics , organic chemistry , biochemistry , receptor , quantum mechanics
Aggregation of free [12]crown‐4 molecules with the Co 2⊖ ‐complex 1 of this ligand leads to formation of the stacks illustrated on the right, through which the Co 2⊙ ions can move. Dynamic NMR‐ and 2D‐ 1 H‐exchange NMR‐measurements suggest a jump mechanism, reminiscent of the mechanism of ion transfer through biomembranes.