A Tetrameric Nickel(II) “Chair” with both Antiferromagnetic Internal Coupling and Ferromagnetic Spin Alignment

Abstract

A Ni4O2 core based on a “chair” topology forms the central unit of the tetranuclear nickel(II) complex 1, which possesses μ3-OH− and butane-2,3-dione-monooximate bridges and displays fascinating magnetic properties. The major Ni–Ni interactions in 1 are antiferromagnetic in nature, and the large Nicore-O-Niterminal angle in the core is responsible for driving all the Nicore spins parallel.