A 3-D supramolecular assembly of {Fe-10} molecular wheels, [Fe(CH3O)(2)(O2CCH2O - Ph)](10) center dot 6H(2)O ( 1) with tubular structure was successfully prepared by a novel approach of simple modification of the building blocks for making symmetric clusters, Fe-10. The diameter of the tubes is approximately 8.9 angstrom. Meanwhile, this tubular structure as the host traps hexameric clusters of water and the magnetic property of complex 1 shows that antiferromagnetic interactions exist between the high - spin iron(III) ions ( S = 5/2) with J = 5.36 cm(-1) and g = 2.03.