Synthesis and reactivity of iridium complexes with pyridine and piperidine ligands: models for hydrodenitrogenation
作者:Merlín Rosales、Teresa González、Reinaldo Atencio、Roberto A. Sánchez-Delgado
DOI:10.1039/b406949h
日期:——
Ir(H)2Cl(eta1-N-L)(PPh3)2 (L = py, 4; iQ, 5) and IrH(Cl)2(eta1-N-L)(PPh3)2 (L = py, 6; iQ, 7). Reaction of 3 with py or iQ yielded complexes 1 and 2, respectively, while under a slow stream of carbon monoxide the complex [Ir(H)2(eta1-N-pip)(CO)(PPh3)2]PF6 (8) was produced. Complex 3 also reacts with halide and 4-bromothiophenolate anions leading to the corresponding neutral species Ir(H)2(X)(eta1-N-pip)(PPh3)2, X
配合物[Ir(H)2(eta1-NL)2(PPh3)2] PF6,L = py(1),iQ(2)和pip(3)(py =吡啶,iQ =异喹啉,pip =哌啶)在适当的氮化合物存在下,通过[Ir(cod)(PPh3)2] PF6的氢化可以高收率合成。当氢气通过1或2的1,2-二氯乙烷溶液鼓泡时,通过溶剂的C-Cl键活化分别形成两个新的物种Ir(H)2Cl(eta1-NL)(PPh3)2(L = py,4; iQ,5)和IrH(Cl)2(eta1-NL)(PPh 3)2(L = py,6; iQ,7)。3与py或iQ反应分别生成配合物1和2,而在一氧化碳的缓慢流动下,配合物[Ir(H)2(eta1-N-pip)(CO)(PPh3)2] PF6(8)产生了。配合物3还与卤化物和4-溴硫代酚酸根阴离子反应生成相应的中性物种Ir(H)2(X)(eta1-N-pip)(PPh3)2,X = Cl(9)