“…214−232 In addition to the homometallic compounds described above, recently Winpenny et al synthesized heterometallic dodecanuclear complexes, [Fe 6 Ln 6 (μ 3 -O) 2 (CO 3 )(O 3 PR) 6 -(O 2 CBu-t) 8 ], where R = methyl, phenyl, or n-hexyl and Ln = Gd, Tb, Dy, or Ho. 24 These complexes have been prepared by utilizing the cluster expansion strategy involving the reaction of [Fe 3 (μ 3 -O)(O 2 CBu-t) 6 (HO 2 CBu-t) 3 ]·(O 2 CBu-t) and [Ln 2 (O 2 CBu-t) 6 (HO 2 CBu-t) 6 ] (Ln = Gd, Tb, Dy, or Ho). These complexes possess the so-called Wells−Dawson type Fe 6 Ln 6 core, as shown in Figure 101.…”