从两个经典不等式的证明谈《数学分析》教学

14-Methyl-, 14-chloro-, 14-fluoro-retinals have been incorporated into apo-retinochrome to investigate the effect of the electronegativities of C-14 substituents on the protonation of the Schiff base. The extent of protonation decreased in going from 14-methyl- to 14-chloro- to 14-fluoro-retinal. Th... View More