trans-Bis[2,5-bis­(pyridin-2-yl)-1,3,4-thia­diazole-κ²N²,N³]bis­(methanol-κO)iron(II) bis­(perchlorate)

The title compound, [Fe(C₁₂H₈N₄S)₂(CH₃OH)₂](ClO₄)₂, crystallized in the solvent-free form from a methanol solution. The Fe^II ion is located on a centre of inversion. The distorted N₄O₂ octa­hedral coordination geometry is formed by two N,N′-chelating equatorial 2,5-bis­(pyridin-2-yl)-1,3,4-thia­diazole ligands and axially coordinating methanol coligands, resulting in the mononuclear trans-(N²,N³,O)₂ coordination mode. The methanol co-ligand is involved in a hydrogen bond to the perchlorate counter-ion.