Kekule von Stradonitz

Friedrich August Kekule von Stradonitz studied the chemistry of carbon in the 1850s and 1860s. He proposed the ring structure of benzene and that carbon was tetravalent. 

Details at the internet address - www.chemheritage.org/classroom/chemach/chemsynthesis/, or, search Archibald Scott Couper and August Kekule von Stradonitz. 

Kekule structure /kay-koo-lay/ A structure of BENZENE in which there is a hexagonal ring with alternate double and single bonds. Two possible Kekule structures contribute to the RESONANCE hybrid of benzene. The structure is named for the German chemist Friedrich Augus Kekule von Stradonitz (1829-96). 

Friedrich August Kekule von Stradonitz, born Sep. 7, 1829, in Darmstadt, died Jul. 13, 1896, in Bonn. 

Friedrich August Kekule von Stradonitz. Source Photo Deutsches Museum. 

Mein Vater hat die Vision der Ringbildung in meinem Beisein sowohl im engsten Kreise der Frau und der Kinder, wie vor Bekannten, wie namentlich vor Fachgenossen, wiederholt er-zahlt." S. Kekule von Stradonitz, "Zwei chemische Visionen" (1927). 

Kekule von Stradonitz, Stephan. "Zwei chemlsche Visionen." Zeitschrift ftir angewandte Chemie 40 (1927) 736-37. 

Lepsius (1918), 41-45 on Kekule (later Kekule von Stradonitz), see Anschutz (1929). 

Figu re 1.4 August Friedrich Kekule von Stradonitz (7 September 1829-13 July 1896). 

Friedrich August Kekule von Stradonitz (1829-1896), German organic and theoretical chemist, professor at the universities in Gent and Bonn. In 1858 Kekule proved, that carbon has valency four and in 1865 proposed the correct ring-like formula for benzene after a peculiar dream about a serpent eating its own tail. 

Avogadro s number. German chemist Eriedrich Kekule von Stradonitz and Scottish chemist Archibald Cooper suggest the modem system of showing graphically how elements in compounds are attached to each other. 

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