86374-26-7Relevant articles and documents
Cumulenes as ligands. Heterobimetallic η2-butatriene complexes containing both a main-group metal and rhodium
White, Mitchell R.,Stang, Peter J.
, p. 1382 - 1385 (2008/10/08)
The interaction of Si-, Ge-, and Sn-functionalized butatrienes with Wilkinson's catalyst produced five new rhodium π complexes, in moderate to good yields. These compounds are all air-stable, crystalline solids, which exhibit some degradation in chlorocarbon solution over a period of days. The IR and 1H NMR spectra of these complexes show that they are structurally analogous to the recently reported rhodium complexes of hydrocarbon butatrienes. The 31P NMR spectra indicate that these complexes are in general diastereomeric mixtures. There is no evidence of insertion of the rhodium fragment into the group 4 metal-carbon bond. The butatriene ligand can be freed from the complexes by exposure to carbon monoxide. These results are discussed in detail.
