Influence of the thermal excitations of the ferrimagnetic () linear trimer on the paramagnetic behavior of the layered metal–radical complex {Mn(hfac)2}3(3RΔ)2⋅n-C7H16

Abstract The complex {Mn(hfac) 2 } 3 (3R Δ ) 2 ⋅ n -C 7 H 16 forms a two-dimensional honeycomb-like spin network. It is shown that the spins of Mn(II) form with the two 1/2-spins of different adjacent triradicals 3R Δ linear ( 1 /2,5/2, 1 /2 ) ferrimagnetic trimers, which determine the paramagnetic properties of the complex. The intratrimer excitations result in the decay of the trimers above 140 K.