Heterospin differently ligand heterotrinuclear (CoII, GdIII, CoII)-complex with nitroxyl radical

One proposes a way to prepare different-metal heterospin compounds with the nitroxyl fragment direct coordination on the basis of the reaction of nitroxyl molecule substitution for acetonitrile molecules in [Co2Gd(NO3)Piv6(CH3CN)2] heterotrinuclear complex. For [Co2Gd(NO3)Piv6(NIT-Me)2] (CoII, GdIII, CoII) heterospin different-ligand heterotrinuclear complex where NIT - Me is the stable nitro-nil nitroxyl radical one determines both the molecular and the crystalline structure, investigates into the magnetic properties within 2-300 K range. The coordination of the nitroxyl groups by CoII ions causes strong exchange interactions of the unpaired electrons in {>N-·O-CoII} exchange clusters resulting in the practical pairing of the spins of every of >N-·O coordinated groups and of one of the unpaired electrons of every CoII ion at temperature below 200 K