condi-tions (≤80°C, 1 bar) afforded AriPr4M≡MoCp(CO)2 or AriPr6M≡MoCp(CO)2 in moderate to excellent yields. The reactions represent the first isolable products from a me-tathesis of two metal-metal triple bonds. Analogous ex-change reactions with the single-bonded (CO)3CpMo-MoCp(CO)3 gave ArM̈-MoCp(CO)3 (Ar = AriPr4 or AriPr6 ; M = Sn or Pb). The products were characterized by NMR (1H, 13C, 119Sn, or 207Pb)
钼-
钼三键二聚体 (CO)2CpMo≡MoCp(CO)2 (Cp = η5-
C5H5) 与三键二
金属炔基 AriPr4
MMAriPr4 或 AriPr6
MMAriPr6 (AriPr4 =
C6H3-2,6-( ) ,6-Pri2)2, AriPr6 = -2,6-(
C6H2-2,4,6-Pri3)2;M = Ge、Sn 或 Pb)在温和条件下(≤80°C,1 bar) ) 以中等至极好的产率提供 AriPr4M≡MoCp(CO)2 或 AriPr6M≡MoCp(CO)2。这些反应代表了两个
金属-
金属三键复分解的第一个可分离产物。与单键 (CO)3CpMo-MoCp(CO)3 的类似交换反应得到 ArM̈-MoCp(CO)3(Ar = AriPr4 或 AriPr6;M = Sn 或 Pb)。产物通过 NMR(1H、13C、119Sn 或 207Pb)、电子和红外光谱以及 X