A Rectangular Zinc Cluster and a Rectangular Nickel Cluster That Exhibits Ferromagnetic Coupling

Abstract

Tetradentate Janus heads L−: Staples for the construction of square tetranuclear clusters of the type [M4L8] 1 (M=Ni, Zn; see picture). The [2×2] grids 1 are generated in a one-pot reaction by self-assembly. The magnetic susceptibility of the nickel complex [Ni4L8] Ni-1 exhibits an increase of χT at low temperature due to intramolecular ferromagnetic coupling of the Ni ions.