Controlled hydrolysis of the divalent organosamarium complex (C5Me5)2Sm(THF)2 in THF forms
[(C5Me5)Sm]6O9H6, 1, which has a solid-state structure
consisting of a distorted octahedral array of six [(C5Me5)Sm]2+ units connected by eight triply bridging oxygens
and a central oxygen.