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161.
Indranil Biswas Subramaniam Senthamarai Kannan Donihakalu Shankar Nagaraj 《Comptes Rendus Mathematique》2017,355(4):452-454
Let be the wonderful compactification of a simple affine algebraic group G of adjoint type defined over . Let be the closure of a maximal torus . We prove that the group of all automorphisms of the variety is the semi-direct product , where is the normalizer of T in G and D is the group of all automorphisms of the Dynkin diagram, if . Note that if , then and so in this case . 相似文献
162.
163.
Kinetics and Thermodynamics of Formation and Electron‐Transfer Reactions of Surfactant Cobalt(III) Complexes Containing Polypyridyl Ligands with Fe(CN)64− in Microheterogeneous Environment 下载免费PDF全文
Karuppiah Nagaraj Krishnan Senthil Murugan Pilavadi Thangamuniyandi Subramanian Sakthinathan 《国际化学动力学杂志》2015,47(3):174-182
The electron‐transfer reaction of some surfactant cobalt(III) complexes, cis‐[Co(ip)2(C12H25NH2)2]3+ 1 , cis‐[Co(dpq)2(C12H25NH2)2]3+ 2 , and cis‐[Co(dpqc)2(C12H25NH2)2]3+ 3 (ip = imidazo[4,5‐f][1,10]phenanthroline, dpq = dipyrido[3,2‐d:2′‐3′‐f]quinoxaline, dpqc = dipyrido[3,2‐a:2′,4′‐c](6,7,8,9‐tetrahydro)phenazine, C12H25NH2 = dodecylamine) with the Fe(CN)64? ion has been investigated in microheterogeneous media (micelles, β‐cyclodextrin) at different temperatures by the spectrophotometric method under pseudo‐first‐order conditions using an excess of the reductant. Experimentally, the reaction was found to be second order and the electron transfer postulated as an outer sphere. The rate constant for the electron‐transfer reaction in micelles was found to increase with an increase in the initial concentration of the surfactant–cobalt(III) complex. This peculiar behavior of dependence of the second‐order rate constant on the initial concentration of one of the reactants has been attributed to the presence of various concentrations of micelles under different initial concentrations of the surfactant–cobalt(III) complex in the reaction medium. Inclusion of the long aliphatic chain of the surfactant complex ion into β‐cyclodextrin leads to decrease in the rate constant. Kinetic data and activation parameters are interpreted in terms of an outer‐sphere electron‐transfer mechanism. All these results have been interpreted in terms of the hydrophobic effect and the reactants with the opposite charge. 相似文献
164.
Santhosh Reddy Naini Subramania Ranganathan Jhillu Singh Yadav A.V.S. Sarma K.V.S. Ramakrishna Ramakrishnan Nagaraj J. Richard Premkumar G. Narahari Sastry 《Tetrahedron letters》2014
The generation of a bihelical (figure of 8) motif has been illustrated by trans opening of EDTAA with l-cystine-di-OMe and d-penicillamine disulfide-di-OMe. In the former case the open cyclic system, arising by cis addition, was secured as a minor product. 相似文献