Aggregation of Aza Crown Ethers by Metalation: Synthesis and Crystal Structure of 1‐Lithio‐1,7‐diaza[12]crown‐4—The First Lithiated Crown Ether

Donald Barr, David J. Berrisford, Luis Méndez, Alexandra M Z Slawin, Ronald Snaith*, J. Fraser Stoddart, David J. Williams, Dominic S. Wright

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Deprotonation of diaza[12]crown‐4 with nBuLi results in dimerization. This is shown by the X‐ray structure analysis, according to which the product obtained is 1. Each Li ion is five‐coordinate and lies appreciably (ca. 0.94 Å) outside the plane of the crown ether. The experimentally found structural changes agree with those found for a model system by MNDO calculation. The Li ions in 1 are well saturated electronically but still accessible to reagents. (Figure Presented.)

Original languageEnglish (US)
Pages (from-to)82-84
Number of pages3
JournalAngewandte Chemie International Edition in English
Volume30
Issue number1
DOIs
StatePublished - Jan 1991

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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