Reactions neighbor effects

The reverse reaction is an intramolecular acidolysis of amide group by the o-carboxyhc acid to reform anhydride and amine. This unique feature is the result of an ortho neighboring effect. In contrast, the acylation of an amine with ben2oic anhydride is an irreversible reaction under the same reaction conditions. The poly(amic acid) stmcture (8) can be considered as a class of polyamides. Aromatic polyamides that lack ortho carboxylic groups are very... 

Polymer properties, influence of ions, 258 Polymer surface reactions, kinetics, 322-323 Polymer transformation reactions configurational effect, 38 conformational effects, 38 hydrolysis of polyfmethyl methacrylate), 38 neighboring groups, 37-38 quaternization of poly(4-vinyl pyridine), 37-38 Polymerization, siloxanes, 239... 

B. Reaction Kinetics on Linear Lattices with Neighbor Effects. 168... 

The solution found when the rate equations are pul equal to zero corresponds to equilibrium in the case of a uniform reaction environment, but also characterizes the steady state if it is assumed that the linear lattice separates two two-dimensional spaces such that on the one side the reaction is all 0 —> 1 according to ku k2, and k3 and on the other all 1 —> 0 according to k2 k2 and k3. As the k s can include functions of the environment within them such as the concentrations of a transported substance with which the lattice reacts, this model can be used to discuss transport through membranes with reactions governed by near neighbor effects. It will be clear that the reactivity of the linear lattice must be defined in an asymmetric fashion in order to obtain transport. 

Kinetics, Gaseous Chemical, Some Physical Aspects of (Careri). Kinetics, Reaction, in Hypersonic Flows (Eschenroeder). Kinetics, Reversible, on Linear Lattices with Neighbor Effects (Rabino-witz, Silberberg, Simha Loftus). 

Langevin Theory of Polymer Dynamics in Dilute Solution (Zwanzig) Large Tunnelling Corrections in Chemical Reaction Rates (Johnston) Lattices, Linear, Reversible Kinetics on, with Neighbor Effects... 

This hypothesis also explains the non-linear enzyme concentration dependency of the reaction. In the event of concurrent adenylation and oxidation reactions in parallel, not in sequential, as a result of the intermediate dissociation, the observed luminescent activity with excess substrates will be rather the square of, than in proportional to, the enzyme concentration. In reality, it was proportional to the enzyme concentration powered by 1.3, probably due to the neighboring effect and/or slow accumulation/ fast degradation of LHi-AMP at neutral pH. 

Silberberg, A., and Simha, R., Kinetics of reversible reactions on linear lattices with neighbor effects, Biopolymers, 6(4), 479 90 (1968). 

Rabinowitz, P, Silberberg, A., Simha, R., Loftus, E., Reversible reactions on linear lattices with neighbor effects. Advances in Chemical Physics, Vol. 15. Stochastic Processes in Chemical Physics, Shuler K. E., Ed., John Wiley, New York, pp. 281-303(1969). 

On the other hand, a non-linear variation of the chiroptical phenomena as a function of the degree of reaction has been found as a quasi-general feature of these polymers. Using the example of a series of random copolymers of a chiral acrylamide and acrylic acid of different compositions, it has been shown that the non-linear variation of their optical activity with composition can be explained by neighboring effects between monomeric units without considering any contribution from ordered macromolecular... 

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