Synthesis, crystal structure and Hirshfeld surface analysis of the hybrid salt bis­(2-methyl­imidazo[1,5-a]pyridin-2-ium) tetra­chlorido­manganate(II)

The 0-D hybrid salt bis­(2-methyl­imidazo[1,5-a]pyridin-2-ium) tetra­chlorido­manganate(II), (C(8)H(9)N(2))(2)[MnCl(4)] or [L](2)[MnCl(4)], consists of discrete L (+) cations and tetra­chlorido­manganate(II) anions. The fused heterocyclic rings in the two crystallographically non-equivalent monovalent organic cations are almost coplanar; the bond lengths are as expected. The tetra­hedral MnCl(4) (2–) dianion is slightly distorted with the Mn—Cl bond lengths varying from 2.3577 (7) to 2.3777 (7) Å and the Cl—Mn—Cl angles falling in the range 105.81 (3)–115.23 (3)°. In the crystal, the compound demonstrates a pseudo-layered arrangement of separate organic and inorganic sheets alternating parallel to the bc plane. In the organic layer, pairs of centrosymmetrically related trans-oriented L (+) cations are π-stacked. Neighboring MnCl(4) (2–) dianions in the inorganic sheet show no connectivity, with the minimal Mn⋯Mn distance exceeding 7 Å. The Hirshfeld surface analysis revealed the prevalence of the non-conventional C—H⋯Cl—Mn hydrogen bonding in the crystal packing.