Poly[tetra­methyl­ammonium [tri-μ₂-formato-κ⁶O:O′-manganate(II)]]

In the title compound, {(C₄H₁₂N)[Mn(HCO₂)₃]}_n, the Mn^II atom lies on an inversion centre and is coordinated by O-atom donors from the three double-bridging formate ligands, one of which lies across a crystallographic mirror plane, giving a slightly distorted octahedral coordination sphere. A three-dimensional NaCl-type framework is generated in which the tetra­methyl­ammonium cations, which lie across mirror planes and occupy the cavities in the polymer structure, form weak C—H...O hydrogen bonds with the formate ligands.