Abstract
It has been shown by Janson and Pope (1936) that the diamines I and II are relatively easily resolved by means of the camphor-β-sulphonic acids. The substance II presents one of the simplest possible dissymmetrical structures, and quite apart from its chemical interest, is also of importance owing to its use by Max Born (1935) as an illustration of the possibility of quantitative predictions of rotatory power. The calculated specific rotatory power of the compound II was shown to agree with the observed value for the salt in water, but in Born's theoretical formula the rotatory power is dependent on the 8 th power of a distance, and for this reason the formula may find a wider application for localizing the vibrators in a molecule by use of the observed rotations. In the work now described the preparations of Janson and Pope have been repeated and extended in order to provide: ( a ) Rotatory dispersion data from which accurate values for the active frequencies could be deduced, in place of the very approximate ones employed by Born. ( b ) The corresponding absorption spectra. ( c ) As many optically active examples of this interesting type as possible, with a view to further application to chemistry of Born's mathematical theory. For these purpose the following compounds were synthesized:
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Schedule a callMore From: Proceedings of the Royal Society of London. Series A - Mathematical and Physical Sciences
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