Abstract

The benzene complex [1-(η-C6H6)-12-ButNH-1,2,4,12-FeC3B8H10]+ (3a) was synthesized by the photochemical reaction of [(η5-C6H7)Fe(η-C6H6)]+ (1) with the anion [7-ButNH-7,8,9-C3B8H10]− followed by the treatment of ferracarborane 1-(η5-C6H7)-12-ButNH-1,2,4,12-FeC3B8H10 (2) with hydrochloric acid. The benzene ligand in cation 3a is replaced by alkyl-substituted benzenes under visible light irradiation in CH2Cl2 to form [1-(η-C6R6)-12-ButNH-1,2,4,12-FeC3B8H10]+ (3b–e; C6R6 is toluene (b), mesitylene (c), hexamethylbenzene (d), or anisole (e)). The structure of [3c]PF6 was established by X-ray diffraction.

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