A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 166330-10-5, Name is (Oxybis(2,1-phenylene))bis(diphenylphosphine), molecular formula is C36H28OP2. In a Article，once mentioned of 166330-10-5, Formula: C36H28OP2
Two CuI complexes, [Cu(imPhen)(POP)]PF6 (1, imPhen = 1H-imidazo[4,5-f][1,10]phenanthroline, POP = bis[2-diphenylphosphino]phenyl ether) and [Cu(Flu-imPhen)(POP)]PF6 {2, Flu-imPhen = 2-(9H-fluoren-2-yl)-1H-imidazo[4,5-f][1,10]phenanthroline} were synthesized and characterized. a weak metal-to-ligand charge-transfer (MLCT) absorption band at lambda = 401 nm with a relatively low molar extinction coefficient (epsilon = 3170 m?1 cm?1) was observed for 1. In contrast, 2 displayed a higher MLCT absorption band at lambda = 405 nm (epsilon = 5400 m?1 cm?1) owing to the incorporation of a fluorene group to imPhen ring. Complexes 1 and 2 exhibited similar emission wavelengths and quantum yields (lambdaem = 564 nm, ? = 11.2 % for 1 and lambdaem = 568 nm, ? = 9.0 % for 2); however, the excited-state lifetime of 2 (tau = 51.2 mus) was almost four times longer than that of 1 (tau = 13.8 mus). The prolonged luminescence lifetime of 2 was rationalized by the reversible energy transfer between the 3MLCT state of the Cu atom and the 3pi?pi* state of fluorene moiety. To the best of our knowledge, this is the first use of a fluorene group as a triplet energy reservoir to extend the excited-state lifetime of an emissive 3MLCT state of a CuI complex.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Formula: C36H28OP2, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 166330-10-5, in my other articles.
Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate