ChemInform Abstract: DIMETHYLSULFONIUMCYCLOPENTADIENYLIDEMOLYBDENUM TRICARBONYL (III)

Coordination complexes of aryl- and alkylphosphonium cyclopentadienylides (cyclopentadienylidene ylides), C5R4PR′R′′R′′′ (R=H, alkyl, aryl; R′, R′′, R′′′=alkyl, aryl)

“…As with the manganese compound, the MS spectrum of the rhenium compound did not exhibit a molecular ion peak, again most likely because of thermal degradation. 13 C NMR data were collected for both the manganese and rhenium compounds, and for both the P-C carbon of the C 5 ring was only slightly shielded relative to the free ligand. A much more dramatic shift was observed for the other carbon resonances of the C 5 ring, which were shifted upfield by more than 20 ppm for both compounds [17].…”