The author of 《Iron(II) complexes with diazinyl-NHC ligands: impact of π-deficiency of the azine core on photophysical properties》 were Darari, Mohamed; Domenichini, Edoardo; Frances-Monerris, Antonio; Cebrian, Cristina; Magra, Kevin; Beley, Marc; Pastore, Mariachiara; Monari, Antonio; Assfeld, Xavier; Haacke, Stefan; Gros, Philippe C.. And the article was published in Dalton Transactions in 2019. Application In Synthesis of 2,4-Dichloropyrimidine The author mentioned the following in the article:
Ligand field enhancing N-heterocyclic carbene (NHC) ligands were recently shown to prevent photo-induced spin crossover in Fe(II) complexes due to their intricate effects on the electronic excited state structure. Due to their pico- to nanosecond lifetimes, these complexes are now good candidates for photo-sensitizing applications. Herein authors report the synthesis and photophys. characterization of a new family of homoleptic Fe(II) complexes with C^N^C ligands involving diazines as the central N-heteroaromatic ligand. For these four carbene bond complexes, ultrafast transient absorption spectroscopy revealed a significant improvement of the excited-state lifetime. A record 32 ps lifetime was measured for a complex bearing a ligand combining a π-deficient pyrazine nucleus and a benzimidazolylidene as NHC. When compared to other azine-based ligands investigated, they argue that the lifetimes are modulated by a small excited state barrier expressing the ability of the ligand to reach the Fe-N distance needed for internal conversion to the ground state. The experimental part of the paper was very detailed, including the reaction process of 2,4-Dichloropyrimidine(cas: 3934-20-1Application In Synthesis of 2,4-Dichloropyrimidine)
2,4-Dichloropyrimidine(cas: 3934-20-1) is a member of organic chlorides. Organic chloride content in crude oil can be detected through specialized laboratory analysis. Care and attention are essential while sampling and testing.Application In Synthesis of 2,4-Dichloropyrimidine
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia