The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.33100-27-5, Name is 1,4,7,10,13-Pentaoxacyclopentadecane, molecular formula is C10H20O5. In a Article，once mentioned of 33100-27-5, Formula: C10H20O5
Enthalpy (kcal/mol) and entropy (eu) changes were obtained for the complexation of H3O+ and CH3OH2+ by crown ethers: 18-crown-6 (Cr6), 15-crown-5 (Cr5), and 12-crown-4 (Cr4).These are as follows: Cr6+H3O+=Cr6*H3O+, DeltaH=-88.5, DeltaS=-55.8; Cr5+H3O+=Cr5*H3O+, DeltaH=-76.9, DeltaS=-43; Cr6+CH3OH2+=Cr6*CH3OH2+, DeltaH=-67.6, DeltaS=-50; Cr5+CH3OH2+=Cr5*CH3OH2+, DeltaH=60.8, DeltaS=-37.6; Cr4+CH3OH2+=Cr4*CH3OH2+, DeltaH=-58.3, DeltaS=-40.6 (standard state 1 atm).The very large exothermicity and large entropy loss for the formation of Cr6*H3O+ is consistent only with the formation of a triply hydrogen bonded complex in which the H3O+ interacts with three oxygens of the Cr6 and there is additional stabilization of the central charge by the remaining three CH2OCH2 dipoles in Cr6.The bonding in the remaining complexes is also examined.The data were obtained by measuring ion-molecule equilibria in the gas phase with a pulsed electron, high-pressure mass spectrometer.
The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 33100-27-5 is helpful to your research., Formula: C10H20O5