Influencing the size of giant rings by manipulating their curvatures: Na-6[Mo120O366(H2O)(48)H-12{Pr(H2O)(5)}(6)]center dot(similar to 200H(2)O) with open shell metal centers at the cluster surface

Muller A; Beugholt C; Bogge H; Schmidtmann M

Inorganic Chemistry, Vol.39, No.15, 3112-3113, 2000

Muller A, Beugholt C, Bogge H, Schmidtmann M

A new type of giant-wheel-shaped anion (see title) is obtained during the formation of the "classical" tetradecameric molybdenum-blue-type species [{Mo-2){Mo-8}{Mo-1}](14) in the presence of Pr3+. The Pr3+ cations substitute {Mo-2} units and thereby increase the curvature of each ring, which leads to destruction and smaller ring sizes.