trans-Bis(nitrato-κO)bis-(1,10-phenanthroline-κ(2)N,N')manganese(II).

In the title compound, [Mn(NO(3))(2)(C(12)H(8)N(2))(2)], the Mn(II) atom lies on a twofold rotation axis, and is six-coordinated in a distorted trans-N(4)O(2) octa-hedral environment by four N atoms from two 1,10-phenanthroline ligands and two O atoms from two nitrate anions. The nitrate anion is disordered about a twofold rotation axis with fixed occupancy factors of 0.5. In the crystal, mol-ecules are linked by weak C-H⋯O hydrogen bonds and π-π stacking inter-actions [centroid-centroid distance = 4.088 (5) Å] into a three-dimensional supra-molecular network.