Mlh. Green et al., REDUCTIVE CARBONYLATIONS REACTIONS OF PRIMARY PHOSPHINE MONO-ETA-CYCLOPENTADIENYLTUNGSTEN(V) COMPOUNDS, Journal of organometallic chemistry, 488(1-2), 1995, pp. 73-78
The new tungsten (IV) compounds [W(eta-(C5H4Pr)-Pr-i)Cl-3(P)(CO)] (whe
re P = H2PC3H5, H2PC2H3 or PMe(3)) have been prepared from the corresp
onding tungsten (V) compounds [W((eta-(C5H4Pr)-Pr-i)Cl-4(P)] by treatm
ent with [Fe-2(CO)(9)] The crystal structures have been determined for
the W(IV) compounds with P = H2PC2H5 and PMe(3).