REACTIONS BETWEEN TETRACYANOETHYLENE AND TRANSITION METAL ACETYLIDES: FORMATION AND CLEAVAGE OF THE CYCLOBUTENYL RING IN AN AUTHENTIC TETRACYANOCYCLOBUTENYLMETAL COMPLEX,

Article abstract of DOI:10.1016/S0022-328X(00)83397-5

The reaction between W(C<*>CPh)(CO)3(η-C5H5) and C2(CN)4 affords , which has been characterised by X-ray crystallography; the four-membered ring is cleaved thermally to give WCPh=C(CN)2>(CO)3(η-C5H5), which in turn is converted photoch