Alexander Butlerov 09 06 1828 years —

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Alexander Butlerov

(09. 06. 1828 years - 05. 08. 1886 years) organic chemist, the founder of scientific school of chemists. Created (1861) and founded theory of chemical structure, according to which the properties of matter depends on the type of atoms in molecules and their mutual influence.

Butlerov began studying chemistry under the direction of Nikolai Nikolaevich Zinin, who taught a course in organic chemistry. Nikolai Nikolaevich Zinin

In 1851 Butlerov defended at Kazan University master's thesis "On the oxidation of organic compounds", and in 1854 already in Moscow University - doctoral thesis "On the essential oils. "

In the sixties of the XIX century Butlerov first identified "metilenitan" - sweetener composition C 6 H 12 O 6.

September 19, 1861 Alexander spoke at the 36 th Congress of the German doctors and scientists in Speyer with the report "On the chemical structure of the substance. "

Summarize the provisions and implications of theory of the structure of Butlerov as follows: 1. Atoms in the molecules of substances are connected according to their valence. Carbon in organic compounds always tetravalent, and its atoms are able to connect with each other, forming a different circuit. 2. Properties of substances are defined not only by their qualitative and quantitative composition, but also the order of atomic bonds in the molecule, ie. E. Chemical structure of the substance. 3. Properties of Organic compounds depend not only on the composition of matter and the order of atomic bonds in its molecule, but also on the mutual influence of the atoms and groups of atoms each other. (The greatest influence the atoms directly bonded to each other. Influence of atoms or groups of atoms that are not directly related, is weakened as they move away from each other. )

Mendeleev wrote later, "Alexander Butlerov - one of the greatest Russian scientists. He Russian scientist and education, and the originality of their labors.

Monument to Alexander Butlerov in Kazan

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