Spiridonov, Kirill A. published the artcilePhosphite-containing iridium polarization transfer catalysts for NMR signal amplification by reversible exchange, Formula: C27H39ClN2, the publication is Mendeleev Communications (2021), 31(4), 475-477, database is CAplus.
Two new iridium complexes with an N-heterocyclic carbine and phosphite ligands have been synthesized and characterized. Bubbling of parahydrogen through their solutions resulted in the formation of several hydride complexes. In the presence of pyridine, this process is accompanied by transfer of spin order from the mol. hydrogen to pyridine mols. undergoing dynamic exchange between free and complex-bound states.
Mendeleev Communications published new progress about 258278-25-0. 258278-25-0 belongs to imidazoles-derivatives, auxiliary class Achiral NHCs Ligands, name is 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, and the molecular formula is C13H9FO, Formula: C27H39ClN2.
Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem