In pyridine the ionic CoI complex [Co(py)6][BPh4](py = pyridine) catalyses the cyclotrimerisation of but-2-yne and hex-I-yne at room temperature; under the same conditions, diphenylacetylene promotes an irreversible disproportionation of the CoI complex to give [Co(py)6][BPh4]2 and (η6-C6Ph6)Co(η2-C2Ph2), this compound having been structurally characterised and its reaction with CO investigated.
在
吡啶中,离子 CoI 复合物 [Co(py)6][BPh4](py =
吡啶)可在室温下催化丁-2-炔和己-1-炔的环三聚反应;在相同条件下,
二苯基乙炔会促进 CoI 复合物发生不可逆的歧化反应,生成 [Co(py)6][BPh4]2 和 (δ-6-C6Ph6)Co(δ-2-C2Ph2) 。