Ferromagnetic and antiferromagnetic spin coupling in Ni4O4 cubane-type clusters with 4-amino-3,5-bis(hydroxymethyl)-1,2,4-triazole as a ligand. The x-ray structure of a new dumbbell-like double cubane cluster
Vreugdenhil, W.; Haasnoot, J.G.; Reedijk, Jan; Spek, A.L.
(1987) Inorganica Chimica Acta, volume 129, issue 2, pp. 205 - 216