3153-26-2, One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time.In a article, authors is Maity, Dipankar, mentioned the application of 3153-26-2, Name is Vanadyl acetylacetonate, molecular formula is C10H14O5V
Oxovanadium(V) complexes of bis(phenolate) ligands with acetylacetone as co-ligand: Synthesis, crystal structure, electrochemical and kinetics studies on the oxidation of ascorbic acid
Two vanadium(V) complexes, [VO(L1)](acac)] (1) and [VO(L2)(acac)] (2), where H2L1 = N,N-bis(2-hydroxy-3-5-di-tert-butylbenzyl)propylamine and H2L2 = 2,2?-selenobis(4,6-di-tert-butylphenol), have been synthesized and characterized by elemental analyses, IR, 51V NMR, both in the solid and in solution, and cyclic voltammetric studies. Single crystal X-ray studies reveal that in complex 1 the vanadium atom is octahedrally coordinated with an O5N donor environment, where the oxygen atom of the VV{double bond, long}O moiety and the N atom of the ONO ligand occupy the axial sites while two oxygen atoms (O1 and O2) from the bisphenolate ligand and two oxygen atoms (O3 and O4) from the acac ligand occupy the equatorial plane. A similar bonding pattern has also been encountered for 2 with the exception that a Se atom instead of N is involved in weak bonding to the metal center. Both complexes showed reversible cyclic voltammeric responses and E1/2 appears at -0.18 and 0.10 V versus NHE for complexes 1 and 2, respectively. The kinetics of oxidation of ascorbic acid by complex 1 were carried out in 50% MeCN-50% H2O (v/v) at 25 C. The high formation constant value, Q = 63 ¡À 7 M-1, reveals that the reaction proceeds through the rapid formation of a H-bonded intermediate. The low k2Q2/k1Q1 ratio (13.4) for 1 points out that there is extensive H-bonding between the oxygen atom of the VV{double bond, long}O group and the OH group of ascorbic acid.
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Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI