Unlike the reactions of carbonyl clusters with pyridine leading to the formation of μ-pyridyl complexes, the reaction of the triruthenium pentahydrido complex Cp*Ru(μ-H)}3(μ3-H)2 (Cp* = η5-C5Me5) (1) with pyridines provided μ3-η2(//)-pyridyl complexes, (Cp*Ru)3(μ-H)4(μ3-η2(//)-RC5H3N) (2a, R = H; 2b, R = 4-COOMe; 2c, R = 4-COOEt; 2d, R = 4-Me; 2e, R = 5-Me), in which the molecular plane of the pyridyl
不同于羰基簇的用
吡啶导致μ
吡啶基复合体的形成的反应中,羰基三
钌pentahydrido络合物的反应的CP *茹(μ-H)} 3(μ 3 -H)2(CP * =η 5 - ç 5我5)(1)其中μ提供
吡啶3 -η 2(//) -
吡啶基配合物,(的CP * Ru)的3(μ-H)4(μ 3 -η 2(//) - RC 5 ħ 3 N)(2a,R = H; 2b,R = 4-COOMe; 2c,R = 4-COOEt; 2d,R = 4-Me; 在图2e中,R = 5-Me),其中
吡啶基的分子平面相对于Ru 3平面倾斜。三
金属核的富电子
金属中心使得能够向
吡啶基基团进行反向供电,这导致了C═N键的额外π配位。的富电子的
金属中心2A - 2c中也促进了进一步转化成面对封盖的
吡啶复合物的CP *茹(μ-H)} 3(μ 3 -η 2:η 2:η 2 -RC 5 H ^ 4 N) (3a,R = H; 3b,R