Deprotonation of 1,2-diazapentadienes in Et2O leads to the respective lithium compounds which, in the case of [(η1-PhNLiNCHCMeCHPh)·Et2O]3, consists of an almost planar (Li–N)3 hexagon resulting in a tunnel-like arrangement of the W-shaped 1,2-diazapentadienyl chains; the X-ray structure, solution NMR spectra and reactions with electrophiles are reported.
A. Krol and E. Würthwein, Chem. Commun., 1998, 485 DOI: 10.1039/A708151K
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