Halogenated solvents such as dichloromethane,
dibromomethane, bromochloromethane, chloroform, and
carbon tetrachloride react with [(1-H-hydronaphthaelene)Mn(CO)3] (1) and pyridines (py‘) to give the halogeno
complex [Mn(CO)3(py‘)2X] (X = Cl, Br) and naphthalene.
The C−H and C−X cleavage reactions are dependent
upon the electronic and steric properties of the pyridine.
The structure of fac-[Mn(CO)3(4-Me-py)2Cl] (5b) has been
established by X-ray diffraction study.