Journal
COORDINATION CHEMISTRY REVIEWS
Volume 240, Issue 1-2, Pages 111-128Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0010-8545(02)00259-X
Keywords
anion complexation; carboranes; Lewis acid; macrocycle; supramolecular assembly; template effect
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Macrocyclic Lewis acidic hosts with structures incorporating electron-withdrawing icosahedral carboranes and electrophilic mercury centers bind a variety of electron-rich guests. These compounds, the so-called mercuracarborands, are synthesized by a kinetic halide ion template effect that affords tetrameric cycles or in the absence of halide ion templates, cyclic trimers. Both types of mercuracarborands form stable host-guest complexes with anionic and neutral electron-rich molecules. The multidentate structure of mercuracarborand hosts has made these unique molecules ideal for catalytic and ion-sensing applications as well as for the assembly of supramolecular architectures. (C) 2002 Elsevier Science B.V. All rights reserved.
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