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The rows of the chart correspond to increasingly larger basis sets. The specific basis sets cited there serve as examples, illustrating the additional types of functions added as you move down any column. The bottom row of the chart represents a completely flexible basis set, and the cells in it correspond to the basis set limit for each specified theoretical method. [Pg.95]

Two new sections on the protection of phosphates and the alkyne-CH are included. All other sections of the book have been expanded, some more than others. The section on the protection of alcohols has increased substantially, reflecting the trend of the nineties to synthesize acetate- and propionate-derived natural products. An effort was made to include many more enzymatic methods of protection and deprotection. Most of these are associated with the protection of alcohols as esters and the protection of carboxylic acids. Here we have not attempted to be exhaustive, but hopefully, a sufficient number of cases are provided that illustrate the true power of this technology, so that the reader will examine some of the excellent monographs and review articles cited in the references. The Reactivity Charts in Chapter 10 are identical to those in the first edition. The chart number appears beside the name of each protective group when it is first introduced. No attempt was made to update these Charts, not only because of the sheer magnitude of the task, but because it is nearly impossible in... [Pg.785]

Charts, correlations, and tables in the sources cited earlier relate capital costs to various parameters characteristic of the equipment to be evaluated. Table B.2 lists typical parameters used to correlate equipment costs for common types of process equipment. Figure B.3 is an example of such correlations for the cost of heat exchangers as a function of exchanger area. These forms of cost curves generally appear as nearly straight lines on log-log plots, indicating a power-law relationship between capital cost and capacity, with exponents typically ranging from 0.5 to 0.8. [Pg.607]

Conclusions. The objectives cited earlier were met. Solid trends do exist in this series can be documented, and can be used to chart new work. Significant trends in residuals encountered after the first phase of the study provided the basis for model refinement. Good support exists for the premise that we have thoroughly traversed the most attractive areas of structure/activity space in this series. [Pg.337]

The articles by Allen cited above are also recommended as the most recent review of various aspects of electronegativity theories and for the idea that electronegativity is the third dimension of the periodic chart."... [Pg.644]

In these equations the heat capacity C p is that of the ideal gas state or that of the real gas near zero or atmospheric pressure. The residual properties AS[ and AH] are evaluated at (Plt T,) and AS2 and AH2 at (P2, Tf). Figure 7.28 gives them as functions of reduced temperature T/Tc and reduced pressure P/Pc. More accurate methods and charts for finding residual properties from appropriate equations of state are presented in the cited books of Reid et al. (1977) and Walas (1985). [Pg.159]

A final example of an n-n reaction will be cited to illustrate still another type of reactivity of the n—r excited state. This is the photolysis of frans-dypnorie oxide (XXXII) to afford as the major product the unsaturated alcohol XXXIV (22). In this case the mechanism, as outlined in Chart VI, involves hydrogen abstraction from the methyl group by the m-situated excited carbonyl group the odd electron containing... [Pg.199]

Figure 1 Experimental solution-state DNP papers cited in this work, displayed by the year of publication. Papers with PEDRI results are not included in this chart because only selected PEDRI papers are cited in this review. Figure 1 Experimental solution-state DNP papers cited in this work, displayed by the year of publication. Papers with PEDRI results are not included in this chart because only selected PEDRI papers are cited in this review.
Because of these results, the current formulations (V, Chart I) for vincaleukoblastine have either a C-15 to C-4 linkage (site of hydroxyl is then a mystery) or a C-15 to C-3 linkage with the hydroxyl on C-3 or C-4 (stereochemistry not specified). These conclusions are acceptable, provided that the C-ethyl of the indole residue pre-exists in the dimer, but the only proof cited is the statement that the NMR is in agreement with structure V (13). The NMR argument should have excluded the possibility that an 18-carbomethoxydihydrocleavamine residue, rather than the 18-carbomethoxyibogamine skeleton, formed the indole moiety of the dimer. If V (Chart I) is to be accepted as true, then the most plausible linkage is... [Pg.275]

Correlations for friction factors and heat transfer coefficients are cited in HEDH. Some overall coefficients based on external bare tube surfaces are in Tables 8.11 and 8.12. For single passes in cross flow, temperature correction factors are represented by Figure 8.5(c) for example charts for multipass flow on the tube side are given in HEDH and by Kays and London (1984), for example. Preliminary estimates of air cooler surface requirements can be made with the aid of Figures 8.9 and 8.10, which are applied in Example 8.9. [Pg.195]


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See also in sourсe #XX -- [ Pg.143 ]




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