The use of polydentate macrocyclic Lewis bases is a way to contribute to determine the coordination number of metal complexes. In this way, hexadentate N₆ donors can help to achieve lanthanoid complexes with coordination number 8. But the geometry of these complexes depends on the flexibility of the bases. In this way, in this communication we present the synthesis and crystallographic characterization of the dysprosium complex [DyL^N6Cl₂]Cl·2H₂O, where L^N6 is a flexible hexaaza donor.