Reactions of tin(II) halides with [(π-C5H5)M(CO)3]2(M = Cr, Mo, and W)
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 22,p. 2434-2437
- https://doi.org/10.1039/dt9720002434
Abstract
It is shown that, contrary to previous reports, the insertion of tin(II) halides, SnX2(X = F, Cl, Br, or I), into the metal–metal bonds of the dimers [(π-C5H5)M(CO)3]2(M = Cr, Mo, or W) takes place on heating. As well as the [(π-C5H5)M(CO)3]2SnX2 derivatives, the products may include the [(π-C5H5)M(CO)3X] and [(π-C5H5)M(CO)3SnX3] complexes. The results are consistent with the availability of two pathways for these reactions. The first is ‘direct insertion’, the second is ‘indirect’, and proceeds via the [(π-C5H5)M(CO)3SnX3] compounds as detectable intermediates. The route adopted depends on both X and M, the reaction solvent, and the presence, or absence, of light. Many of these reactions also proceed smoothly at room temperatures, or somewhat above, on u.v. irradiation to give a similar range of products. Related reactions of the ‘mixed’ dimers [(π-C5H5)2CrW(CO)6] and [(π-C5H5)2MoW(CO)6] are described. The reactions between [(π-C5H5)M(CO)3SnX3] and [(π-C5H5)M′(CO)3]2(X = Cl, Br, or I; M, M′= Cr, Mo, or W) may be used to prepare [(π-C5H5)M(CO)3][(π-C5H5)M′(CO)3]SnX2, and [(π-C5H5)Fe(CO)2][(π-C5H5)M(CO)3]SnX2 may be similarly obtained.Keywords
This publication has 0 references indexed in Scilit: