Poly[chlorido(μ3-1,2,4-triazolato)manganese(II)

Abstract

The title compound, [Mn(C2H2N3)Cl]n, has been prepared by the hydro­thermal reaction of manganese(II) chloride and 1,2,4-triazole. The MnII cation is surrounded by three N atoms belonging to three different triazolate ligands and a Cl atom, and exhibits a slightly distorted tetra­hedral coordination geometry. A polymeric layer is formed by the triply bridging nature of the 1,2,4-triazolate ligand bonded to three different MnII atoms through its three N atoms. The layer contains both binuclear units and tetra­nuclear macrocyclic units. In the binuclear unit, two Mn atoms are bridged by two nearly coplanar triazolate groups through the 1,2-positions, affording a six-membered ring around an inversion center. Each binuclear unit is further connected to four parallel units through the other four N atoms of the triazolate groups. Four adjacent units, which are pairwise parallel, afford 16-membered tetra­nuclear macrocyclic units. In each of these, the two nearest-neighbor Mn atoms are bridged by a single triazolate group through the 1,4-positions.