Pentanuclear octacyanotungstate(V)-based molecule with a high spin ground state S=(13)/(2)

Podgajny R; Desplanches C; Sieklucka B; Sessoli R; Villar V; Paulsen C; Wernsdorfer W; Dromzee Y; Verdaguer M

Inorganic Chemistry, Vol.41, No.5, 1323-1327, 2002

Podgajny R, Desplanches C, Sieklucka B, Sessoli R, Villar V, Paulsen C, Wernsdorfer W, Dromzee Y, Verdaguer M

The pentanuclear octacyanotungstate (V)-based molecules [Mn-II(bpy)(2)][Mn-II(bpy)(2)(H2O)](2)[W-V(CN)(8)](2).7H(2)O are V-shaped and packed into a broken chainlike structure (because of aromatic pi-pi stacking of the bpy rings) forming infinite linear columns. The compound exhibits intramolecular antiferromagnetic coupling between Mn-II and W-V ions, which leads to a high spin g-round state S = 13/2. Long-range intermolecular ferromagnetic ordering occurs at 0.66 K and prevents the observation of single molecule magnet behavior. [GRAPHICS] RAPHICS]