title: Synthesis of ionisable [2 x 2] grid-type metallo-arrays and reversible protonic modulation of the optical properties of the [Co4(II)L4]8+ species.
abstract: The new bis-hydrazone based ligands A and B form ionisable [2 x 2] grid-type transition metal complexes whose properties may be modulated by multiple protonation/deprotonation as shown by the reversible change in optical properties of the [Co2(II)L4]8+ complexes depending on their protonation state.
authors.affiliation: ISIS, 8 Allée Gaspard Monge, BP 70082, F-67083 Strasbourg cedex, France.
authors.forename: Mario
authors.initials: M
authors.lastname: Ruben
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Lehn
authors.forename: Gavin
authors.initials: G
authors.lastname: Vaughan