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Issue 21, 1995
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Synthesis, structure and anion co-ordination chemistry of a novel macrocyclic cobaltocenium receptor

Abstract

A new macrocyclic amide-substituted cobaltocenium receptor, 1,1′-[(ethylenedioxy)bis(ethyleneaminocarbonyl)]cobaltocenium hexafluorophosphate 2 has been prepared and its single-crystal X-ray structure determined. Proton NMR anion co-ordination studies revealed that 2 and other new acyclic cobaltocenium derivatives complex chloride and bromide anions with 1:1 stoichiometry. Comparative stability constant evaluations imply that the macrocyclic receptor 2 forms halide complexes of greatest thermodynamic stability, suggestive of a ‘macrocyclic anion effect’. Cyclic voltammetric investigations showed the cobaltocenium receptors to electrochemically recognise halide anions.

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Article information


J. Chem. Soc., Dalton Trans., 1995, 3447-3453
Article type
Paper

Synthesis, structure and anion co-ordination chemistry of a novel macrocyclic cobaltocenium receptor

P. D. Beer, M. G. B. Drew, J. Hodacova and S. E. Stokes, J. Chem. Soc., Dalton Trans., 1995, 3447 DOI: 10.1039/DT9950003447

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