The critical parameters of pyridine are pressure 6.70 MPa, temperature 620 K and volume 229 cm3·mol−1. 31181-90-5, formula is C6H4BrNO, Name is 5-Bromopicolinaldehyde. In the temperature range 340–426 °C its vapor pressure p can be described with the Antoine equation.. Reference of 31181-90-5.
Chen, Hongyun;Wang, Jinglan;Zhao, Feng;Wang, Yibo;He, Haifeng;Xia, Hongying research published 《 Synthesis, spectroscopic and DFT studies of copper(I) complexes inserting the electron-donating groups into pyridine-imidazole ligands vis an acetylide linker》, the research content is summarized as follows. The three Cu(I) complexes [Cu(POP)(NN̂)]PF6, NN̂ = 2-(1H-imidazol-2-yl)-5-(p-tolylethynyl)pyridine (P1), 2-(1H-imidazol-2-yl)-5-((4-methoxyphenyl)ethynyl)pyridine (P2), 4-((6-(1H-imidazol-2-yl)pyridin-3-yl)ethynyl)-N,N-diphenylaniline (P3), were prepared and characterized. The different electron-donating groups such as methylphenyl, methoxyphenyl, and diphenylamine substituents were functionalized onto the pyridine ring part of the diimine ligands through an acetylide linker to enhance the light-absorption abilities, giving the larger light-absorption ability and red-shifted absorption bands for the investigated Cu(I) complexes. Yellow emissions in the range of 579-590 nm with quantum yields of 8.40-15.1% can be observed for all complexes at room temperature The photophys. properties were further explained by DFT and TDDFT methods.
Reference of 31181-90-5, 5-Bromopyridine-2-carbaldehyde is a useful research compound. Its molecular formula is C6H4BrNO and its molecular weight is 186.01 g/mol. The purity is usually 95%.
5-Bromopyridine-2-carbaldehyde is a water soluble organic molecule that has been shown to inhibit the mitochondrial respiratory chain. It is a structural analog of the natural substrate for mitochondrial cytochrome c oxidase, 5-aminolevulinic acid. This compound has been shown to be selective against cancer cells and has anti-viral properties. The photophysical properties of 5-bromopyridine-2-carbaldehyde have been studied extensively. The fluorescence quantum yield of this molecule in aqueous solution is 0.06%., 31181-90-5.