SCHEDULED MAINTENANCE
Reactions of the 1-chloro-2,2-dicyanovinyl derivatives (NC)2C![[double bond, length half m-dash]](https://www.rsc.org/images/entities/char_e006.gif)
C(Cl)M(CO)3C5H5(M = Mo and W) with trivalent phosphorus and related ligands result in migration of chlorine from carbon to the transition metal to give products of the type C5H5ML2[CC(CN)2]Cl [M = Mo and W; L = Ph3P, Ph3As, Ph3Sb, (MeO)3P, (EtO)3P, and (PhO)3P] containing a terminal dicyanomethylenecarbene ligand.
R. B. King and M. S. Saran, J. Chem. Soc., Chem. Commun., 1972, 1053 DOI: 10.1039/C39720001053
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