Transformation of μ3-acetylide cluster Co2(CO)6 [μ-PhCCRe(CO)5] into carbyne cluster Co2Re(CO)10(μ3-CPh)

Abstract The acetylide complex Co 2 (CO) 6 [μ-PhCCRe(CO) 5 ] ( I ) undergoes nondestructive reaction with oxygen which results in the net loss of one acetylide carbon atom together with a CO ligand and accompanied by the formation of the carbyne cluster Co 2 Re(CO) 10 (μ 3 -CPh) ( II ). According to X-ray structural data, cluster II is a distorted tetrahedral which contains CoCo (2.526(4) A) and CoRe (2.694(4) and 2.704(3) A) bonds.