[N,N-Bis(2-pyridylmeth-yl)glycinato-κN,N',N'',O]dichloridoiron(III)-[N,N-bis-(2-pyridylmeth-yl)glycine-κN,N',N'',O]dichloridozinc(II) (1/1)

The title compound, [Fe(C(14)H(14)N(3)O(2))Cl(2)]·[ZnCl(2)(C(14)H(15)N(3)O(2))], is formulated as [Fe(III)(bpg)Cl(2)][Zn(II)Cl(2)(bpgH)], where bpg is the tetra-dentate ligand N,N-bis-(2-pyridylmeth-yl)glycine. The structure contains one crystallographically distinct complex with Fe(III) and Zn(II) atoms present in a 50:50 ratio in a single-atom site. The non-coordinated O atoms of the carboxyl groups of bpg meet across crystallographic inversion centres, forming O-H⋯O hydrogen bonds that include only one H atom per two complexes, consistent with the 1:1 disorder of Fe(III) and Zn(II).