Bonding implications of interatomic distances and ligand orientations in the iminolithium hexamers [LiNC(Ph)But]6 and [LiNC(Ph)NMe2]6: a stacked-ring approach to these and related oligomeric organolithium systems

D BARR, W CLEGG, Robert Mulvey, R SNAITH, K WADE

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Abstract

The ligand orientations and Li–N distances in the title compounds show that their µ-3-imino units NC(Ph)R (R = But or NMe2) function as 3-electron ligands, forming one 2-centre LiN bond and one 3-centre Li2N bond to isosceles triangles of bridged metal atoms, prompting treatment of each hexamer [LiNC(Ph)R]6 as a pair of stacked cyclic trimers [LiNC(Ph)R]3; extension of this ring-stacking principle allows many other structures to be rationalised in lithium chemistry and facilitates structural predictions.
Original languageEnglish
Pages (from-to)295-297
Number of pages3
JournalJournal of the Chemical Society, Chemical Communications
Issue number4
DOIs
Publication statusPublished - 15 Feb 1986

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Keywords

  • interatomic distances
  • ligands
  • iminolithium hexamers
  • stacked-ring approach
  • oligomeric organolithium systems

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