Homologue definition

Higher homologues than the butatrienyl cations are not known to the best of my knowledge. The summary given here provides strong evidence for the existence of the cumulated vinyl cations, i.e. allenyl and butatrienyl cations. A leap into the preparatory domain, harvesting the potentials of these cations, should definitely be a fruitful venture. 

A large number of related homologues of psilocin have been synthesized and described, and some of them tasted to varying degrees, but none of them to a degree of definition to justify a recipe devoted just to them. With the 4-hydroxyl... 

Here ),p, the specific viscosity, is equal to the relative viscosity minus one. Staudinger designates C as the concentration of the solution in basal moles or the number of moles of the polymeric repeating unit per liter thus, for a starch acetate, it is the number of grams per liter divided by 288. K , is a constant particular to a definite series of homologues measured in a definite solvent, and M is the molecular weight. Ordinarily, this equation is employed for viscosity values extrapolated to zero concentration. Although the relationship is by no means exact " ... 

NOTE.—(c) The identification of a substance is best accomplished by converting it into a solid which has a definite melting-point and can be readily purified. In the case of acetic acid and its homologues the anilides serve this purpose well (SECTION 497). They are formed as the result of the elimination of water from the acid and aniline ... 

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