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, Safety of Dibenzo-18-crown-6
Investigations of the poly iodides H3O¡¤Ix (x = 3, 5 or 7) as dibenzo-18-crown-6 complexes
The compounds [H3O(dibenzo-18-crown-6)][Ix(x = 3,5,7) have been synthesised and investigated by X-ray diffraction as well as Raman and far-IR spectroscopy. The structure of the triiodide contains two independent, slightly asymmetric and bent I3- ions with I-I distances in the range 2.92-2.94 A. The pentaiodide can be described as composed of (I3-)¡¤I2, where the I-I distances in the asymmetric and slightly bent I3 unit are 2.894(2) and 2.942(2) A and in the I2 unit 2.763(2) A. The L-shaped I5- ions are linked together forming a chain of I10 rectangles through van der Waals interactions in the range 3.7-3.8 A. The structure determination supports a pyramidal geometry of the H3O+ ion in the dibenzo-18-crown-6 moiety of both structures. Because of severe crystal twinning the crystal structure of the heptaiodide could not be determined. However, the results from the spectroscopic investigation are consistent with a heptaiodide of composition (I3-)¡¤2I2. The Royal Society of Chemistry 2000.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Safety of Dibenzo-18-crown-6. In my other articles, you can also check out more blogs about 14187-32-7
Reference£º
Chiral Catalysts,
Chiral catalysts – SlideShare