A second monoclinic polymorph of bis­(2,2′-bipyridine-κ(2) N,N′)diiodido­manganese(II)

The Mn(II) ion in the title complex, [MnI(2)(C(10)H(8)N(2))(2)], is six-coordinated in a distorted cis-N(4)I(2)Mn octa­hedral environment by four N atoms of the two chelating 2,2′-bipyridine ligands and two iodide anions. As a result of the different trans effects of the N and I atoms, the Mn—N bonds trans to the I atom are slightly longer than the Mn—N bonds trans to the N atom. The dihedral angle between the approximately planar ligands [maximum deviation = 0.064 (7) Å] is 75.0 (1)°. Numerous inter- and intra­molecular π–π inter­actions between the pyridyl rings are present, the shortest centroid–centroid distance being 3.905 (5) Å. The structure reported herein represents a new monoclinic polymorph of the previously reported monoclinic (P2(1)/c) form [Ha (2011 ▶). Z. Kristallogr. New Cryst. Struct. 226, 187–188].