T. Chivers et al., A SANDWICH COMPLEX OF LITHIUM-OXIDE - (LI[(BUC)-C-N(NBUT)(2)])(4).LI2O, Journal of the Chemical Society. Dalton transactions, (16), 1998, pp. 2603-2605
Hydrolysis of {Li[(BuC)-C-n(NBut)(2)]}(2), prepared from LiBun and (Bu
NCNBut)-N-t in hexanes, produced the nineteen atom cluster {Li[(BuC)-C
-n(NBut)(2)]}4 . Li2O; an X-ray structure determination revealed an Li
2O molecule encapsulated by two eight-membered Li2N4C2 rings.