Practically Diamagnetic Macrocycle Consisting of Nickel-Biradical Heterospins with the Largest Out-of-Plane Torsion at Coordination Bonds

A 2p-3d heterospin macrocyclic adduct from 5-t-butyl-1,3-phenylene bis(t-butyl nitroxide) and nickel(II) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate with a molar ratio of 2/2 was practically diamagne...