The putative three-coordinate Ir(I) PNPPri (PNPPri = [N2-P(CHMe2)2-4-MeC6H3}2]–) pincer complex decarbonylates ethanol to yield methane, hydrogen and [PNPPri]Ir(CO). The mechanism involves the isolable trans-[PNPPri]Ir(H)(Me)(CO), which is susceptible to photochemical reductive elimination of methane.
假定的三配位Ir(I)
PNPPri (
PNPPri = [N2-P(CHMe2)2-4-MeC6H3}2]–) 钳形配合物能使
乙醇脱羰生成
甲烷、
氢气和[
PNPPri]Ir(CO)。该机制涉及可分离的trans-[
PNPPri]Ir(H)(Me)(CO),该化合物容易发生光
化学还原消除反应生成
甲烷。