Feller, Moran published the artcileCO2 activation by metal-ligand-cooperation mediated by iridium pincer complexes, Formula: C23H43NP2, the publication is Journal of Coordination Chemistry (2018), 71(11-13), 1679-1689, database is CAplus.
Herein we report the reversible activation of CO2 by the dearomatized complex [(tBuPNP*)Ir(COE)] and by the aromatized complex [(tBuPNP)Ir(C6H5)] via metal-ligand cooperation (MLC) (tBuPN = 2,6-bis-(di-tert-butylphosphinomethyl)pyridine; tBuPNP* = deprotonated PNP; COE = cyclooctadiene). The [1,3]-addition of CO2 to both complexes is reversible at ambient temperature While the dearomatized complex reacts readily at ambient temperature with CO2 in THF or benzene, the aromatized complex reacts with CO2 upon heating in benzene at 80 °C or at ambient temperature in THF. The novel aromatized complex [(tBuPNP)IrCl] does not react with CO2. Based on the reactivity patterns of these complexes with CO2, we suggest that CO2 activation via MLC takes place only via the dearomatized species, and that in the case of [(tBuPNP)Ir(C6H5)], THF plays a role as a polar solvent in facilitating formation of the dearomatized hydrido Ph complex intermediate.
Journal of Coordination Chemistry published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, Formula: C23H43NP2.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem