Über die katalytische Spaltung und Oxydation der Ameisensäure

Paal, C.; Poethke, W

doi:10.1002/cber.19260590728

Cited by 8 publications

(1 citation statement)

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“…Benzoic (10) and acetic (11) acids are highly stable as regards resistance to both heat and chemical reagents. Formic acid may be split to yield CO quantitatively (12,13,14), C02 almost exclusively (15,16,17,18,19), or mixtures of both in varying proportions (18,19,20,21) under conditions of widely differing degrees of severity. Triplienylacetic acid when heated alone above its melting point eliminates COs (22), but gentle warming in concentrated H2S04 leads to quantitative evolution of CO (23).…”

Section: Methods Of Applicationmentioning

confidence: 99%

The electron in organic chemistry. III. The thermal and hydrolytic stability and instability of the carbon-to-carbon bond

Kharasch¹,

Reinmuth²,

Mayo³

1934

J. Chem. Educ.

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The authors discuss briefly the functions and criteria of merit of scientific models in general. In the light of this prefatory statement the graphic aids to exposition employed by the writers are described as constituting a simple and co?ivenient system of notation for indicating energy relationships. The mechanism, validity, and limitations of the method adopted for the determination of relative electronegativities of organic radicals are discussed. The breadth of applicability of the authors' system of notation is noted, but certain natural limitations are pointed out. The method of applying the system to the + + + THE SCIENTIFIC MODEL, ITS FUNCTIONS AND CRITERIA OF MERIT IT SEEMS to the writers desirable, even at the expense of some repetition, to preface the third article of this series with a few further remarks on scientific models, their functions and criteria of merit. Briefly, the model is a tool whereby we hope to attain one of the primary ends of science-generalization. By its use we hope to correlate apparently isolated phenomena, to classify and order facts in such a manner that they take on a discernible pattern. Secondary and perhaps more utilitarian potentialities of the model lie in its mnemonic and predictive aspects. It is easier to remember associated than isolated facts; also it is often possible to deduce forgotten qr totally unknown facts from remembered generalizations.The criteria of merit in a model are, therefore, as Langmuir (2) has stated them-generality and convenience, the latter of which implies also simplicity. Superficially it might appear that generality and simplicity are fundamentally incompatible-that, as a model is adapted to cover an ever-widening range of subject matter, it must necessarily become more complicated in the process. In refutation of this idea, however, let us consider the snowflake. Its crystallography is hexagonal. To specify a particular snowflake it is necessary to add numerous details not obviously inferable from our original statement, but the most * Parts I and II of this series (Kh. and R.

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