The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a Article，once mentioned of 37366-09-9, Product Details of 37366-09-9
The quinoline moieties of the metal-bound eta2-1,1?-biisoquinoline ligand of (eta6-benzene)(delta/ lambda-1,1?-biisoquinoline)halometal(II) hexafluorophosphate (metal = ruthenium, osmium; halo = chloro, iodo; 1(M = Ru, Os; X = Cl, I)) are stereotopic. The rates of atropisomerization of the delta/lambda-1,1?-biisoquinoline ligand, measured by spin-labeling NMR methods, indicate the energy barrier is higher for 1(Ru) than 1(Os); e.g., DeltaH?[1(M = Ru, X = Cl)] = 77.3(2) and DeltaH?[1(M = Os, X = Cl)] = 71.2(2) kJ mol-1. Since the crystal structures of 1(M = Ru, X = Cl) and 1(M = Os, X = Cl) reveal comparable metric parameters, steric factors associated with atropisomerization of the 1,1?-biisoquinoline ligand, essentially the deformation of the 1,1?-binaphthylene skeleton that is necessary to pass H8 and H8? past one another, are presumably equivalent for the Ru and Os derivatives. Assuming that normal bond energies are greater for the third-row transition metal than for second-row transition metals, we conclude the difference in reactivity can be attributed to electronic factors – the sigma-donor orbitals and pi-acceptor orbitals of the 1,1-biisoquinoline ligand are misdirected in the ground state but redirected in the syn transition state of atropisomerization. Thus, an inverse relationship between the kinetic and thermodynamic stabilities of 1 is observed for the misdirected ? [directed]? ? misdirected (MDM) isomerization of 1 (the more thermodynamically stable bond is more reactive). Atropisomerization of 1 represents only the second example of such an inverse free-energy relationship for a thermodynamically controlled reaction, and it contrasts with the regular relationship that has been found for the atropisomerization of related directed ? [misdirected]? ? directed (DMD) systems.
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Product Details of 37366-09-9, you can also check out more blogs about37366-09-9
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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI