摘要
Ｒｕ（ＯＡｃ）_２（Ｐｈ_３Ｐ）_２和１或２摩尔的双－（二苯基膦）乙烷（ｄｐｐｅ）在回流的甲苯中反应，分别生成双膦配位的Ｒｕ（ＯＡｃ）_２（Ｐｈ_３Ｐ）（ｄｐｐｅ）和Ｒｕ（ＯＡｃ）_２（ｄｐｐｅ）_２。并进行了元素分析、ＩＲ、ＮＭＲ等谱学表征。在温度－５０至４０℃的范围内，测定了Ｒｕ（ＯＡｃ）_２（Ｐｈ_３Ｐ）（ｄｐｐｅ）的￣（３１）Ｐ｛￣１Ｈ｝ＮＭＲ谱，讨论了配合物中膦配体的配位状态。在反应温度３０至９０℃、氢压１．０至５．０ＭＰａ的条件下，考察了两个配合物均相催化丙烯酸和苯乙烯的氢化性能。结果表明，题示的两个配合物是催化丙烯酸和苯乙烯氢化的有效催化剂。
The interaction of Ru(OAc)_2(Ph_3P)_2 with one and two equivalents of bis-(diphenylphoshino)ethane[dppe]in refluxing toluene gives Ru(OAc)_2(Ph_3P)(dppe)and Ru (OAc)_2(dppe)_2,respectively,These two compounds have been fully characterized by elemental analysis,IR and NMR spectra.The solution dynamics of Ru (OAc)_2(Ph_3P)(dppe)has been studied by variable temperature￣(31)P NMR spectroscopy at the temperature range of-50 to 40℃, The results reveal that the phosphine ligands of the complex adopt a fac-configuration,Under the hydrogen pressure of 1.0 to 5.0 MPa and reaction temperature 30 to 90 ℃,these two complexes as catalysts for homogeneous hydrogenation of acrylic acid and styrene have been investigated.The results indicate the title compounds are effective catalyst for hydrogenation of acrylic acid and styrene.
出处
《分子催化》
CSCD
1995年第2期125-131,共7页
Journal of Molecular Catalysis(China)
基金
国家教育委员会留学回国人员资助
关键词
膦钌配合物
氢化
配合物
合成
钌
催化剂
Diphosphine-ruthenium complex
Acrylic acid
Styrene
Hydrogenation.
