exo-(+/-)-tricarbonyl(eta(6)-1-hydroxy-1,2-dihydroacenaphthylene)chromium(0)

The crystal structure of the title compound, [Cr-(C12H10O)(CO)(3)], contain s two conformers in an asymmetric unit. The projection of the Cr(CO)(3) uni t on the arene ring is staggered in one conformer, whereas it is about midw ay between staggered and eclipsed in the other. In both conformers, the Cr( CO)(3) unit is slightly displaced relative to the center of the arene ring. The hydroxyl groups are involved in hydrogen bonding between the conformer s lying about glide planes, with O . . .O distances of 2.835 (8) and 2.771 (8) Angstrom, resulting in chains along the a axis.