Abstract
Three 1-D transition metal–nitronyl nitroxide radical complexes with dicyanoaurate(I) bridges, [M(NIT3py) 2][Au(CN) 2] 2 [NIT3py = 2-(3′-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, M = Mn, Co, Zn ( 1– 3)], were synthesized and structurally characterized. Three compounds are all isostructural in monoclinic, C2/ c space group with Z = 4. The [Au(CN) 2] − anions link [M(NIT3py) 2] units via μ 2-bridging mode, leading to a linear coordination chain. The M(II) ion adopts a distorted octahedral geometry with four N atoms from [Au(CN) 2] − groups and two pyridyl-N atoms from NIT3py ligands. The magnetic behavior shows that the couplings are both weak antiferromagnetic between Mn(II) and NIT3py and between Co(II) and NIT3py.
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