Mechanistic Investigation of the Hydration Reaction of [Cr(η<sup>6</sup>-silabenzene)(CO)<sub>3</sub>]: Hydrido(silacyclohexadienyl)chromium Complex as an Intermediate
A key intermediate for the hydration reaction of [Cr(η 6 -silabenzene)(CO) 3 ], hydrido(η 5 -silacyclohexadienyl)chromium complex, was successfully synthesized by the reaction of silabenzene complex with 2molequiv of H 2 O. X-ray diffraction study revealed that the hydroxy group on the central silicon atom is located at the endo position to the metal moiety. The treatment of the endo adduct with excess