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. 14098-44-3, Name is Benzo-15-crown-5, molecular formula is C14H20O5. In a Article£¬once mentioned of 14098-44-3, SDS of cas: 14098-44-3
Synthesis and structural characterization of a new supermolecular compound: H3PW12O40¡¤6C14H20O5¡¤16H2O (C14H20O5 = benzo-15-crown-5)
The new supermolecular compound, H3PW12O40¡¤6C40H20O5¡¤16H2O (C14H20O5 = benzo-15-Crown-5), was synthesized in methanol solution and structurally characterized by elemental analysis, IR, 1H NMR and single crystal X-Ray diffraction. It was shown that PW12O40/3- anions possess alpha-Keggin structure with crystallographic disorder. The disorder averages the W-W distances and W-O(b/c)-W angles, but the vibrational ellipsoids of oxygen atoms are not elongated obviously. In the compound, water blocks are formed, which are hydrogen-Bonded to crown ether molecules. Since crown ether molecules fetter the movement of water molecules and oxonium ions, the conductivity is lower (rho(r.t.) < 10-7 S cm-1). The compound crystallizes in the triclinic space group PI? with a = 14.154(3), b = 15.598(3), c = 18.023(3) A?, alpha = 67.17(3), beta = 89.83(3), gamma = 83.27(3), V = 3638.1(13) A?3, Z = 1 and R1(wR2) =0.0655(0.1701). (C) 2000 Elsevier Science B.V. Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.SDS of cas: 14098-44-3, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 14098-44-3, in my other articles.
Reference£º
Chiral Catalysts,
Chiral catalysts – SlideShare