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DOI: 10.1039/A702280H (Paper) Reference Section for: Chem. Commun., 1997, 1607-1608

Synthesis and X-ray structures of tetralithium derivatives of tert-butylcalix[4]arene containing unique Li–O cores based on a square-pyramidal geometry

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Matthew G. Davidson, Judith A. K. Howard, Sarah Lamb and Christian W. Lehmann

Abstract

Tetralithiation of tert-butylcalix[4]arene in the presence of hmpa (hexamethylphosphoramide) results in the isolation of either a monomeric complex in which LiOH is incorporated into an Li5O5 core based on an isolated square pyramid of Li atoms, or a dimeric LiOH-free species containing an Li8O8 core in which the same structural motif is maintained by edge-sharing of two square pyramids of Li atoms.

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