Reaction of [Re2(CO)9(MeCN)] with cis-1,2-bis(diphenylphosphino)ethylene (cis-Ph2PCH=CHPPh2) in boiling benzene (80 °C) afforded two compounds, ax-[Re2(CO)9(κ1-cis-Ph2PCH=CHPPh2)] (1) and ax-[Re2(CO)9{κ1-cis- Ph2PCH=CHPh2P(O)}] (2) where the ligand is axially coordinated in a κ1 monodentate fashion through phosphorus. The close-bridged compound eq-[Re2(CO)8(μ-κ2-cis-Ph2PCH=CHPPh2)] (3) is obtained from a similar reaction of the same ligand with [Re2(CO)8(NCMe)2] in refluxing benzene. In this case the diphosphine is equatorially coordinated to two Re atoms in a symmetrical bridging fashion. Compounds 1−3 have been characterized by IR, 1H NMR, 31P{1H} NMR spectroscopy and single crystal X-ray diffraction analyses.

中文翻译：

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带有顺-1,2-双(二苯基膦)乙烯和顺-1,2-双(二苯基膦)环氧乙烷配体的二铼羰基化合物

[Re2(CO)9(​​MeCN)] 与顺式-1,2-双（二苯基膦）乙烯（顺式-Ph2PCH=CHPPh2）在沸腾苯 (80 °C) 中反应得到两种化合物 ax-[Re2(CO) 9(κ1-cis-Ph2PCH=CHPPh2)] (1) 和 ax-[Re2(CO)9{κ1-cis-Ph2PCH=CHPh2P(O)}] (2) 其中配体以κ1单齿方式轴向配位通过磷。近桥化合物 eq-[Re2(CO)8(μ-κ2-cis-Ph2PCH=CHPPh2)] (3) 由相同配体与 [Re2(CO)8(NCMe)2] 的类似反应获得在回流苯中。在这种情况下，二膦以对称桥接方式与两个 Re 原子赤道配位。化合物1-3已通过IR、1H NMR、31P{1H}NMR光谱和单晶X射线衍射分析表征。