Synthesis of cuboidal (C5H4Me)4Ru4E4 by condensation of (C5H4Me)Ru(PPh3)2EH (E = S, Se)

Abstract
(C5H4R)Ru(PPh3)2EH (E = S, Se) complexes undergo condensation in hot toluene solutions to give high yields of [(C5H4R)4Ru4E4], the first Ru4E4 cubanes; a structural study of the Ru4S4 species shows two short Ru–Ru distances consistent with a 68e cluster.

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