(ESI-MS/MS). Trends in reactivity established from these studies were rationalized in terms of steric bulk, on the arene or phosphine, and conformational freedom of the phosphine ligands. A good correlation is found between these trends, especially from the ESI-MS/MS data, and activity of the complexes as catalyst precursors for the hydrogenation of styrene to ethyl benzene (in THF). The most active
的范围内的解离膦特征双-膦
钌(II)配合物-arene,的[Ru(PPH 3)(PR 3)(η 6 -arene)] PF 6(
芳烃= p -cymene:PR 3 = PPhMe 2,PPh 3,P(p- tol)3,PPh 2 i;
芳烃=的PhMe:PR 3 = PPhMe 2,PPH 3),的[Ru(PPH 3)(η 2 -PPh 2(C 6 H ^ 4 O))(η 6 - p -cymene)] PF 6,和将[RuCl( PPH 3)(η 7 -PPh 2(CH 2)3的pH)] PF 6,已经通过
配体交换动力学的组合研究(以P(p -tol)3在THF中)和串联电喷雾电离质谱(ESI-MS / MS)。通过这些研究确定的反应性趋势在
芳烃或膦的空间体积,以及
膦配体的构象自由度方面得到了合理化。在这些趋势之间,尤其是从ESI-MS / MS数据,与作为
苯乙烯加氢成乙苯(在THF中