η6-Hydroquinone and catechol complexes of manganese tricarbonyl. 0olecular structure of [( η6-hydroquinone) Mn(CO) 3] 2SiF 6

Abstract

The reaction of ( η 6-acenaphthene)Mn(CO) 3 + with hydroquinone and catechol affords the stable π-bonded complexes ( η 6-hydroquinone)Mn(CO) 3 + ( 1) and ( η 6-catechol)Mn(CO) 3 + ( 2). The X-ray structure of [ 1] 2SiF 6 shows an approximately planar arene ligand with the -OH substituents strongly hydrogen bonded to fluorine atoms in the SiF 6 2− anion. Deprotonation of 1 and 2 by NEt 3 yields the corresponding π-bonded semiquinone complexes.