Showing papers in "Journal of Molecular Catalysis in 1979"

TL;DR: The new complexes (η-4-cyclooctene-1-yl)(1,1, 1,5, 5, 5-hexafluoro-2,4-pentanedionato) nickel, Ic, and Ib, are shown to have a linearity of > 80% as mentioned in this paper.

TL;DR: The rhodium cluster complex, Rh6(CO)16, has been found to catalyze the homogeneous reduction of nitrobenzene to aniline at temperatures above 80 °C in the presence of N,N-dimenthylbenzylamine, using any one of the following reducing gases: (1) H 2/CO, (2) H2, (3) CO/H2O).

TL;DR: In this paper, an investigation of the above class of asymmetric catalysts has been extended to a series of structurally different chiral bis-aminophosphine ligands, and the results show that the catalyst enantioselectivity is markedly influenced, and in some cases substantially improved, by the chemical modification of the chelate ligand structure.

TL;DR: In this article, a bifunctional catalyst for the autoxidation of mercaptans was presented using poly(vinylamine), that acts both as supplier of basic sites and as a carrier for the oxidation catalyst cobalt(II)-4,4′,4″, 4′- tetracarboxyphthalocyanine.

TL;DR: In this article, the formation of methyl viologen anion radical in the reaction with photoexcited Ru(bpy) 2+3 in the presence of the weak reducing agent triethanolamine, has been established.

TL;DR: In this paper, a relation entre le rendement optique et une propriete structurale du diacide precurseur de la diphosphine was established.

TL;DR: In this paper, the formation and transformation of an active site for the carbonylation of methanol in the gas phase have been studied for various catalytic systems composed of Al2O3, Al 2O3·SiO2, SiO2 or TiO2 as supports and RhCl3 as the active agent.

TL;DR: In this paper, the electronic and steric effects of the ligand were used to determine the activity of catalysts for acetone hydrogenation formed in situ from [Rh(norbornadiene)Cl]2 and phosphines or phosphinic acid esters.

TL;DR: In this article, the amino-carbonylation of aliphatic aldehydes proceeds with exceptionally high selectivity and some aspects of the reaction mechanism are discussed which may explain the failure to obtain an asymmetric synthesis under the conditions used.

TL;DR: In this paper, the incorporation of excess PPh 3 into the catalysts leads to an increase in regioselectivity for n-aldehyde production and to a greater stability.

TL;DR: In this article, the CNDO/2 method was applied in the study of the electronic structure of zeolite HY using models employing (HO)3Si.O.OH.Al(OH)−3 clusters for various types of skeletal oxygens.

TL;DR: In this paper, the influence of the structure of copper/tert. amine-complexes on their catalytic activity in oxidative coupling reactions has been investigated, and only binuclear complexes with bridging hydroxo ligands proved to be catalytically active compounds.

TL;DR: To facilitate separation of these enzyme-containing gels from suspension, a ferrofluid — a surfactant-stabilized magnetite colloid — has been entrapped in them and suggests that acylation and polyacrylamide gel formation are concurrent in the experiment procedures used.

TL;DR: In this article, a narrow range of CO pressure and phosphine concentration is identified, in which high activity and regioselectivity for linear aldehyde formation is boserved.

TL;DR: In this paper, it was found that dibenzophospholes cause considerable rate enhancement in comparison with diphenylphosphines as catalyst ligands, although they behave like phosphines of strong donor ability in terms of the product distribution.

TL;DR: In this article, the octahedral cis-dihydridotetrakis configuration of 1 in non-polar solvents has been studied and a mechanism involving olefin coordination to a partly dissociated species of 1, followed by the insertion into one of the Rubonds has been proposed.

TL;DR: Basicity of the catalyst turns out to be more important for the transition state and, hence, the product formed, than steric factors as mentioned in this paper, which is always associated with an E1cB mechanism for dehydration.

TL;DR: In this paper, the authors used homogeneous systems containing the complexes MCl(C8H12)PPh3 (M = Rh and Ir), and heterogeneous systems with Rh and IR metals.

TL;DR: In this article, the authors studied the hydrocarboxylation of propene with PdCl 2 (PPh 3 ) 2 as a catalyst precursor and showed that the selectivity towards the straight-chain isomer increases on decreasing the temperature or increasing the catalyst concentration.

TL;DR: In this article, the kinetics of iron deposition in apoferritin were studied in a number of buffers, both iron-complexing and noncomplexing, and they concluded that at higher pH values the ratelimiting step in ferritin iron deposition is a second order reaction corresponding to fixation of 2 iron atoms/catalytic site, whereas at lower pH values, the rate-limiting process is the deprotonation of a group, or groups, on the protein with a p K of around 6.00 was obtained.

TL;DR: In this article, the interaction of cobalt phthalocyanine with ammonia and oxygen in solutions of DMF was studied and the products investigated by e.s.r. signals showing the appropriate 14 N superhyperfine (s.h.f.) splitting.

TL;DR: In this paper, the activation of 2,6-dimethylphenol and diphenylphenol was studied using a catalyst consisting of copper(II) chloride and polystyrene partially substituted with dimethylaminomethyl ligand groups.