Ta. Bazhenova et al., REACTION OF AN IRON-LITHIUM COMPLEX WITH TOLANE AND THE STRUCTURE OF DILITHIUMTETRAPHENYLBUTADIENE FORMED, Journal of organometallic chemistry, 490(1-2), 1995, pp. 71-73
The crystal structure of 1,4-dilithiumbutadiene 2 obtained in the reac
tion of tolane with an iron(II) hydridolithium complex shows that 2 is
a dimer with four lithium atoms, forming a distorted tetrahedron with
short Li-Li and Li-C distances. Implication for the reaction of the i
ron-lithium complex with dinitrogen is discussed.