Friedrich Kekule, German chemist

Friedrich Kekule, German chemist

H411/0147 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 26.3MB

Downloadable file size: 1.2MB

Price image Pricing

Please login to use the price calculator


Credit: SCIENCE PHOTO LIBRARY

Caption: Friedrich August Kekule von Stradonitz (1829- 1896), German organic chemist. In 1858 Kekule proposed that the valence of a carbon atom (the fixed number of other atoms or groups it can bond with) is four. At the same time, he proposed that carbon atoms could be linked to form stable chains, and that the molecular structure of these chains could be given diagrammatically, with lines representing chemical bonds. This "structural theory" allowed chemists to deduce the structure of an organic molecule from its physical and chemical properties. In 1865 Kekule discovered the ring structure of the molecule benzene, another major advance in organic chemistry.

Release details: Model release not available. Property release not required.

Keywords: august, benzene, black-and-white, carbon, chemical, chemist, chemistry, friedrich, german, historical, history, kekule von stradonitz, male, man, monochrome, organic, portraits, scientist, structural theory, structure, surname k, valence

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.