μ-η1,η2-bound furyl fragment remains intact. When the reactions were carried out using bis(diphenylphosphanyl)ethane (dppe) or bis(diphenylphosphanyl)propane (dppp), the compounds [Ru2(CO)5(μ-PFu2)(μ-η1-C6H4PPh(CH2)nPPh2)] [5 (n = 2), 6 (n = 3)] were isolated as the thermodynamic products in which both P atoms chelate to one Ru centre to afford five- (for 5) and six-membered (for 6) ruthenacycles,
[Ru2(CO)6(μ-PFu2)(μ-η1,η2-Fu)] (Fu = 2-furyl) (1) 与双(
二苯基膦基)
甲烷(dppm)、双(
二苯基膦基)胺( dppam) 或双(
二苯基膦酰基)
甲胺 (dppma),产生取代产物 [Ru2(CO)4(μ-PFu2)(μ-η1,η2-Fu)(μ-L)] [2 (L = dppm) , 3 (L = dppam), 4 (L = dppma)] 良率良好。在每种情况下,Ru-Ru 边缘都被
双膦桥接,而 μ-η1,η2 结合的
呋喃基片段保持完整。当使用双(
二苯基膦酰基)
乙烷(dppe)或双(
二苯基膦酰基)
丙烷(dppp)进行反应时,化合物[Ru2(CO)5(μ-PFu2)(μ-η1-C6H4PPh(
CH2)nPPh2)] [5 (n = 2), 6 (n = 3)] 作为热力学产物被分离出来,其中两个 P 原子螯合到一个 Ru 中心以提供五元(对于