Transition range factors affecting

There has been much interest in the preparation and properties of phosphine macrocycles since the early 1980s.4 While simple mono- and diphosphines, on account of the balance of their cr-donor and 7r-acceptor capabilities, represent an important class of ligands to a wide range of transition metal centers, incorporation of phosphine functions within a macrocyclic environment introduces additional factors affecting their behavior as ligands due to the macrocyclic effect. The synthesis of P-containing macrocycles has been reviewed previously.1,2,4... 

In addition to the effect of the upward velocity on a setthng particle, there is also the random motion of the micro-scale environment, which does not affect large particles veiy much but is a major factor in the concentration and uniformity of particles in the transition and micro-scale size range. 

The uncertainties in the condensed-phase thermodynamic functions arise from (1) the possible existence of a solid-solid phase transition in the temperature range 2160 to 2370 K and (2) the uncertainty in the estimated value of the liquid heat capacity which is on the order of 40%. While these uncertainties affect the partial pressures of plutonium oxides by a factor of 10 at 4000 K, they are not limiting because, at that temperature, the total pressure is due essentially entirely to O2 and 0. 

Taking the phonon source out of equilibrium at a certain frequency range may lead to enhancement in Ipc. On a speculative level, one may visualize shining the electrons with a high intensity beam of non-equilibrium phonons with a narrow frequency range around, say, w0. Icc, resulting from resonant transitions, will be significantly affected only when u>o is close to the differences e — Cj or c( — C(. The effect on the Debye-Waller factor will be small for a narrow-band beam. In this way, Icc will initially increase with the intensity of this radiation, until decoherence effects will take over and Ipc will disappear. 

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