本文报道了含乙基四甲基环戊二烯基钌化合物的合成、反应及晶体结构测定。由乙基四甲基环戊二烯与RuCl_3·xH_2O反应得到了含五元环及氯原子配体的二聚体2,2与不同比例的三甲基膦反应可分别得到含一个及二个三甲基膦的分子3和4。晶体结构分析表明钌原子在这三个分子中均取“三腿钢琴凳”式配位形式,3,4中的Ru—Cl键较弱,易于发生取代反应而生成其它衍生物。 In this paper, the synthesis, reaction and crystal structure of ethyltetramethylcyclopentadienyl ruthenium compounds have been reported. By the reaction of tetramethylcyclopentadiene with RuCl 3 · xH 2 O, dimers containing 5-membered ring and chlorine atom ligands 2,2 react with different proportions of trimethylphosphine to give one and two Trimethylphosphine molecules 3 and 4. The crystal structure analysis shows that the ruthenium atom takes the “three-legged piano stool” coordination form in all three molecules. The Ru-Cl bonds in 3,4 are weaker and the substitution reaction is easy to generate other derivatives.