cis-Dipyridine Complex of Bis(ω-nitroacetophenonato)manganese(II)

In the title compound, bis(ω-nitroacetophenonato-O,O')bis(pyridine)manganese(II), [Mn(C₈H₆NO₃)₂(C₅H₅N)₂], the ω-nitroacetophenone (ω-nap) ligands chelate the manganese center, forming a six-membered ring with a bite angle of 80.13 (11)°. The distance from the metal to the nitro-O atom is longer than that from the metal to the carbonyl O atom, indicating that the latter is more strongly bound and suggesting a keto-to-enol mechanism preceding the binding of ω-nap to the metal.

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