M. Yoshifuji et al., X-RAY-ANALYSIS OF 1-PHOSPHA-1,2,3-BUTATRIENE AS A LIGAND OF CARBONYLTUNGSTEN COMPLEX, Journal of organometallic chemistry, 461(1-2), 1993, pp. 81-84
X-Ray analysis was carried out of ,4,6-tri-t-butylphenyl)-1-phospha-1,
2,3-butatriene as a ligand of pentacarbonyltungsten complex. The heter
ocumulene system was found to be planar with a rod framework coordinat
ing to the tungsten metal at the phosphorus atom in a sigma-type coord
ination.