Diaquabis[5-(2-pyridyl)tetrazolato-κ2N1,N5]iron(II)

Abstract

The title complex, [Fe(C6H4N5)2(H2O)2], was synthesized by the reaction of ferrous sulfate with 5-(2-pyridyl)-2H-tetrazole (HL). The FeII atom, located on a crystallographic center of inversion, is coordinated by four N-atom donors from two planar trans-related deprotonated L ligands and two O atoms from two axial water molecules in a distorted octahedral geometry. The FeII mononuclear units are further connected by intermolecular O—H...N and C—H...O hydrogen-bonding interactions, forming a three-dimensional framework.