Reference of 108-47-4, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.108-47-4, Name is 2,4-Dimethylpyridine, molecular formula is C7H9N. In a Article£¬once mentioned of 108-47-4
Heat capacities of the six dimethylpyridines between the temperatures 10 K and 445 K and methyl-group rotational barriers in the solid state
Heat capacities and enthalpy increments between the temperatures T = 10 K and 445 K were determined for the six dimethylpyridines by adiabatic calorimetry. (Chemical Abstract registry numbers: 2,3-dimethylpyridine <583-61-9>; 2,4-dimethylpyridine <108-47-4>; 2,5-dimethylpyridine <589-93-5>; 2,6-dimethylpyridine <108-48-5>; 3,4-dimethylpyridine <583-58-4>; and 3,5-dimethylpyridine <591-22-0>.) Triple-point temperatures and enthalpies of fusion are reported for each material, and enthalpy increments and entropies relative to those of the crystals at T -> 0 were derived.Lambda-type phase transitions in the crystals were observed for 2,6-dimethylpyridine and 3,4-dimethylpyridine.A small step or “bump” was observed in the heat-capacity-against-temperature curves for 2,6-dimethylpyridine and 2,3-dimethylpyridine.Barriers to methyl-group rotation in the solid state are estimated for each compound and compared with literature values.
We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 108-47-4, and how the biochemistry of the body works.Reference of 108-47-4
Reference£º
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis