An Intermolecular Hydrogen Bridge between a Porphyrinoid μ‐Oxido Diiron(III) Host and a Guest Water Molecule

μ‐Oxido‐bis(hexaethyldimethyl‐2,2′‐bidipyrrinato)iron(III)] ( 1 ) crystallizes as a mixed dichloromethane/water solvate as black plates in the triclinic system, space group P\bar{1} , with a = 14.536(3), b = 16.194(3), c = 25.883(5) Å, α = 98.89(3)°, β = 91.28(3)°, γ = 90.56(3)°, and Z = 2. In the crystal structure two distinct solvates 1· CH₂Cl₂ and 1· H₂O are present in equal ratio. In both cases the solvent is found in direct vicinity of the Fe–O–Fe subunit and is located within a binding pocket formed by the two helically distorted tetrapyrroles. Whereas the dichloromethane molecule is oriented within this pocket as a dipole with the positive end pointing towards the oxygen atom of the Fe–O–Fe subunit, the water molecule forms a hydrogen bond with this site, supported by additional weak interactions with adjacent N‐donor atoms.