Heating under reflux solutions of the monosubstituted vinylidene complex [RuCC(H)Ph}(η5-C9H7)(PPh3)2][PF6] (1) in nitriles yields the complexes [Ru(N⋮CR)(η5-C9H7)(PPh3)2][PF6] (R = Me (2a), Et (2b), Ph (2c)) and phenylacetylene. The process proceeds via an initial η1-vinylidene-η2-alkyne tautomerization followed by the displacement of the coordinated π-alkyne by the solvent. Vinylidene complexes
下的单取代的亚
乙烯基复杂的[Ru 的回流溶液加热Ç C(H)PH}(η 5 -C 9 ħ 7)(PPH 3)2 ] [PF 6 ](1在腈)得到配合物的[Ru(N ⋮CR)(η 5 -C 9 ħ 7)(PPH 3)2 ] [PF 6 ](R =我(图2a),等(图2b)中,Ph(2C))和苯基
乙炔。通过初始η处理前进1 -vinylidene-η 2-炔炔互变异构,然后由溶剂置换配位的π-
炔烃。偏二配合物的[Ru Ç C(H)R}(η 5 -C 9 ħ 7)(PPH 3)2 ] [PF 6 ](R =(η 5 -C 5 H ^ 4)的Fe(η 5 -C 5 H 5)(3),4-NO 2 -C 6 H 4(4))也与
乙腈反应生成腈衍
生物2a和相应的末端
炔烃HC⋮CR。阳离子烯基-亚
乙烯基衍
生物[Ru Ç C(H)CH CR 1 - [R 2 }(η 5 -C 9 ħ 7)(PPH 3)2