Cyanide-Bridged [Fe 8 M 6 ] Clusters Displaying Single-Molecule Magnetism (M = Ni) and Electron-Transfer-Coupled Spin Transitions (M = Co) Kiyotaka Mitsumoto, Emiko Oshiro, Hiroyuki Nishikawa, Takuya Shiga, Yasuhisa Yamamura, Kazuya Saito, and Hiroki Oshio* [a]  2011 Wiley-VCH Verlag GmbH&Co. KGaA, Weinheim Chem. Eur. J. 2011, 17, 9612 – 9618 9612 DOI: 10.1002/chem.201101404