Linking metal centres with 1,4-bis(diphenylphosphino)but-2-yne (DPPBu): syntheses and molecular structures of [{Mo(CO)4(μ-DPPBu)}2] and [{Mo(CO)4(ν2-DPPBu)}3{Mo(CO)}]
作者:Graeme Hogarth、Jim Yau Pang
DOI:10.1016/0022-328x(95)06050-7
日期:1996.5
Addition of cis-[Mo(CO)4(piperidine)] to 1,4-bis(diphenylphosphino)but-2-yne (DPPBu) affords [Mo(CO)4(ν-DPPBU)}2] (1) and [Mo(CO)4(ν2-DPPBu)}3Mo(CO)}](2), both of which have been characterised crystal lographically. Three different bonding modes of the diphosphine are seen in the two complexes. In 1 it bridges molybdenum tetracarbonyl centres via coordination through phosphorus to give a 14-membered
将顺式-[Mo(CO)4(哌啶)]添加到1,4-双(二苯基膦基)丁-2-炔(DPPBu)中可提供[Mo(CO)4(ν-DPPBU)} 2 ](1)和[沫(CO)4(ν 2 -DPPBu)} 3 沫(CO)}](2),两者都已经被表征的晶体lographically。在两种配合物中可以看到二膦的三种不同键合模式。在1中,它通过磷配位桥接四羰基钼中心,形成一个具有椅子状构型的14元环,而在2中 二膦螯合四羰基钼中心,并且通过碳-碳三键的配位将这些单元中的三个进一步络合至羰基钼片段。