In situ lithiation of HN(o‐C₆H₄PPh₂)₂ (H[1a]) or HN(o‐C₆H₄PiPr₂)₂ (H[1b]) with nBuLi in THF at −35°C followed by addition of [Ir(μ‐Cl)(COD)]₂ (COD = 1,5‐cyclooctadiene) in toluene at −35°C generates 5‐coordinate [1a]Ir(η⁴‐COD) (2a) or 4‐coordinate [1b]Ir(η²‐COD) (2b), respectively. Oxidative addition of N‐H in H[1b] to [Ir(μ‐Cl)(COD)]₂ affords square pyramidal [1b]Ir(H)(Cl) (3b). Metathetical reaction of 3b with LiBHEt₃ in the presence of 1 atm of H₂ in toluene produces [1b]Ir(H)₂ (4b). Both 2a and 4b are active for catalytic hydrogenation of olefins and alkynes under extremely mild conditions.

中文翻译：

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铱的酰胺基PNP配合物：合成及催化烯烃和炔烃加氢

HN（o- C ₆ H ₄ PPh ₂）₂（H [ 1a ]）或HN（o- C ₆ H ₄ P i Pr ₂）₂（H [ 1b ]）的原位锂化反应在THF中具有n BuLi 35℃，随后加入的[Ir（μ-Cl）的（COD）]的₂在甲苯（COD = 1,5-环辛二烯）在-35℃下生成5-坐标[ 1A ]的Ir（η ⁴ -COD）（图2a）或4-坐标[ 1B ]的Ir（η ² -COD）（2b中）， 分别。将H [ 1b ]中的N–H氧化加成到[Ir（μ-Cl）（COD）] _2中，得到方形金字塔形的[ 1b ] Ir（H）（Cl）（3b）。在甲苯中有1个大气压的H ₂存在下3b与LiBHEt _3的复分解反应产生[ 1b ] Ir（H）₂（4b）。两个图2a和图4b是极其温和的条件下的烯烃和炔烃的催化氢化活性。