This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 Excerpt: ...in short, when submitted to any cause whatever which favors the formation of one of the asymmetric isomers. Such conditions are exceptional; and generally in the case of bodies prepared synthetically those which are active will escape the observation of the chemist unless he endeavors to separate the mixed isomeric ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 Excerpt: ...in short, when submitted to any cause whatever which favors the formation of one of the asymmetric isomers. Such conditions are exceptional; and generally in the case of bodies prepared synthetically those which are active will escape the observation of the chemist unless he endeavors to separate the mixed isomeric products, the combined action of which upon polarized light is neutral. We have a striking example of this in tartaric acid, for neither the dextro-nor the laevo-tartaric acid has ever been obtained directly by synthesis, but the inactive racemic acid which is a combination of equal parts of the dextro and lsevo acids, is always obtained. MEMOIRS ON STEREO-CHEMISTRY. Biographical Sketch. Jules Achille Le" Bel was born at Pechelbroun, Alsace, January 21, 1847. He studied chemistry and physics at the Lycee Charlemagne, the Ecole Polytechnique aud under Wurtz in the Ecole de Medicine. He owned large interests in the oil deposits of Pechelbroun, which he sold; and since then he has lived privately in Paris for the most part, devoting himself to chemical studies. His first investigations were in connection with the petroleum of Pechelbroun. He soon became interested in optically active compounds and was early led to his theory of the asymmetric carbon atom. Much of his subsequent work has been devoted to the experimental confirmation of this theory, and to the extension of the views to ammonia compounds. THE SPACE ARRANGEMENT OF THE ATOMS IN ORGANIC MOLECULES AND THE RESULTING GEOMETRICAL ISOMERISM IN UNSATURATED COMPOUNDS. Abh. K. Sachs. Oes. der Wissenschaften, 14. 1. Leipsig, 1887. BY JOHANNES WISLICENUS. CONTENTS. PAGE /. Introduction....65 //. Necessary extension of the theory concerning the space relation of the elementary atoms in organic ...
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