Abstract

The reactions of the diiron cationic carbyne complexes 1−3 with NaN(SiMe3)2 or LiN(SiMe3)2 in THF at low temperature give novel N-nucleophilic addition products, the neutral diiron bridging carbyne complexes 4−6, while the reactions of 1−3 with LiNEt2 lead to breaking of the COT ring to produce the diiron bridging carbene inner salts 7−9, among which the structures of 4 and 7 have been established by X-ray diffraction studies.

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