A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 14187-32-7, Name is Dibenzo-18-crown-6, molecular formula is C20H24O6. In a Article，once mentioned of 14187-32-7, SDS of cas: 14187-32-7
A new complex [K(Db18C6)]+[FeCl4]- (I) is synthesized and its structure is studied by X-ray diffraction analysis. The crystals are triclinic: space group P 1, a = 17.998, b = 18.670, c = 19.590 A, alpha = 106.61, beta = 104.55, gamma = 113.87, Z = 8. The structure is solved by a direct method and refined by the full-matrix least-squares method in the anisotropic approximation to R = 0.057 by 13 670 independent reflections (CAD-4 automated diffractometer, lambdaMoK alpha). All the four independent complex cations [K(Db18C6)] + are host-guest, and in each complex cation the K+ cation is localized in the cavity of the Db18C6 crown ligand. The coordination polyhedron of K+ (coordination number nine) is a distorted hexagonal bipyramid with the base of all six O atoms of the Db18C6 ligand, the axial vertex at the Cl atom of the [FeCl4]- anion, and another bifurcated axial vertex at two Cl atoms of another [FeCL4] – anion. All the four independent [FeCL4]- anions are orientationally disordered and have somewhat distorted tetrahedral structure. In crystal I, the alternating complex cations [K(Db18C6)]+ and [FeCL4]- anions form infinite polymer chains by the K-Cl bonds.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.SDS of cas: 14187-32-7, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 14187-32-7, in my other articles.
Reference：
Chiral Catalysts,
Chiral catalysts – SlideShare