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, SDS of cas: 33100-27-5
The reaction of Pb[BF4]2 in H2O/MeCN solution with the macrocycle 18-crown-6 gave the dinuclear complex [{Pb(18-crown-6)(H2O)(mu2-BF4)} 2][BF4]2, containing two nine-coordinate lead centres, each bound to all six oxygens of a crown ligand, one water molecule and bridged by two mu2-BF4 groups. In contrast, the oxa-thia crown [18]aneO4S2 gave the mononuclear [Pb([18]aneO4S2)(H2O)2(BF 4)][BF4] in which the lead is coordinated O 4S2 within the puckered ring of the macrocycle, and with two water molecules on one side of the plane and a chelating (kappa2) BF4- on the other. The [Pb([18]aneO4Se2)(BF4)2] has the two BF4- groups arranged mutually cis and with the macrocycle folded; within each BF4- group the Pb-F distances differ by ?0.5 A, producing a very unsymmetrical chelate. The 15-membered ring macrocycles 15-crown-5 and [15]aneO3S2 produce sandwich complexes [Pb(macrocycle)2][BF4]2 which contain 10-coordinate lead centres. Pb[PF6]2 in H2O/MeCN solution formed [Pb(18-crown-6)(H2O) 2(PF6)][PF6] and [Pb([18]aneO4S 2)(H2O)2(PF6)][PF6] which contain weak kappa2-coordination of the PF6- group on the opposite side of the macrocyclic ring to two coordinated water molecules, giving 10-coordinate lead. In contrast, [Pb([18]aneO 4Se2)(PF6)2] has two kappa2-coordinated PF6- groups disposed cis, with a very folded macrocycle conformation. In [Pb(18-crown-6)(NO 3)(PF6)] a chelating nitrate group occupies the coordination sites at Pb(ii) instead of the two water molecules, and the weakly coordinating PF6- group is tridentate. The crystal structures of the lead nitrate complexes, [Pb(15-crown-5)(NO3) 2] and [Pb([18]aneO4Se2)(NO3) 2], containing nine- and 10-coordinate lead respectively, are also reported. In solution the complexes are labile, and both conductivity and 19F NMR spectroscopic studies show the BF4- and PF6- groups are dissociated, whereas in the nitrate complexes the anion coordination is retained in solution. The identification of the coordination modes of the NO3- and BF4 – groups in the solid complexes by IR spectroscopy is discussed. The Royal Society of Chemistry 2013.
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., SDS of cas: 33100-27-5