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Topic: Friedrich August Kekul von Stradonitz


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  Friedrich August Kekulé von Stradonitz - Wikipedia, the free encyclopedia
Friedrich August Kekulé von Stradonitz (September 7, 1829 – July 13, 1896) was a German organic chemist.
In 1857 Kekulé proposed that carbon was tetravalent.
In 1895 Kekulé was ennobled by Emperor William II, giving him the right to add "von Stradonitz" to his name, referring to an ancient possession of his family in Stradonice, Bohemia.
en.wikipedia.org /wiki/Friedrich_August_Kekul%C3%A9_von_Stradonitz   (222 words)

  
 Friedrich August Kekulé von Stradonitz - Wikipedia
Sein von Hans Everding erschaffenes und 1903 errichtetes Denkmal steht vor dem alten Chemischen Institut der Bonner Universität in der Meckenheimer Allee 168.
Ein Umstand welcher auch von seinen ersten Biographen vermerkt wurde.
Kekulés Arbeiten trugen entscheidend zur Entwicklung der organischen Chemie bei und führten zu einem Boom der deutschen Chemieindustrie, allen voran der Farbstoffhersteller.
de.wikipedia.org /wiki/Kekule   (986 words)

  
 FRIEDRICH AUGUST KEKUL É   (Site not responding. Last check: 2007-09-19)
Friedrich August Kekulé was born on September 7, 1829 in Darmstadt, Germany.
Kekulé's oscillation theory of rapidly interchanging double bonds in the benzene ring explained the existence of only one disubstituted derivative in various syntheses--a problem that his earlier conception of the ring structure of benzene did not address.
Kekulé Charicature- donated by William Jensen, University of Cincinnati, and may be used for educational purposes only.
www.woodrow.org /teachers/chemistry/institutes/1992/Kekule.html   (2259 words)

  
 Search Encyclopedia.com
Froebel, Friedrich Wilhelm August Froebel, Friedrich Wilhelm Augustfrā´bel, frō´-, Ger.
Mackensen, August von Mackensen, August vonou´goost fen mä´kenzen, 1849-1945, German field marshal.
Weber, Carl Maria Friedrich Ernst von Weber, Carl Maria Friedrich Ernst vonfrē´drĬkh ĕrnst fen vā´ber, 1786-1826, German composer and pianist; pupil of Michael Haydn and Abbé Vogler.
www.encyclopedia.com /search.asp?target=Friedrich+August+Kekul%E9+von+Stradonitz&rc=10&fh=29&fr=11   (532 words)

  
 Encyclopedia: Friedrich-August-Kekulé-von-Stradonitz   (Site not responding. Last check: 2007-09-19)
1857 Kekulé proposed that carbon was Valence is a scientific term in chemistry to describe electrons in the outermost orbital.
In 1895 Kekule was enobled by Emperor Wilhelm II German Emperor and King of Prussia Wilhelm II of Prussia and Germany, Friedrich Wilhelm Viktor Albert von Hohenzollern (January 27, 1859– June 4, 1941) was the last German Emperor (Kaiser) and the last King (König) of Prussia, ruling from 1888 to 1918.
William II, giving him the right to add "von Stradonitz" to his name, referring to an ancient possession of his family in Stradonice, Bohemia.
www.nationmaster.com /encyclopedia/Friedrich_August_Kekul%E9_von_Stradonitz   (1310 words)

  
 Friedrich August Kekulé von Stradonitz   (Site not responding. Last check: 2007-09-19)
Friedrich August Kekulé von Stradonitz (1829 - 1896) was a German organic chemist.
He made studies of various carbon compounds, especially benzene, for the structure of which he developed the ring theory and valences, in 1857 Kekulé proposed that carbon was tetravalent.
Instantly he thought of and the open air; and Mary, watching him, saw the lines upon.
www.termsdefined.net /fr/friedrich-august-kekul%e9-von-stradonitz.html   (213 words)

  
 August Friedrich Kekule - Air Purifier Resource
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 Aromaticity   (Site not responding. Last check: 2007-09-19)
The model for benzene consists of two resonance forms, which corresponds to the double and single bonds switching positions.
The circulating pi electrons in an aromatic molecule generate significant local magnetic fields that can be detected by NMR techniques.
Aromaticity was discovered by Kekul� in benzene, and was first explained in quantum mechanical terms by Linus Pauling in the 1930s.
copernicus.subdomain.de /aromatic   (589 words)

  
 MSN Encarta - Resultados de la búsqueda - August Kekulé von Stradonitz
MSN Encarta - Resultados de la búsqueda - August Kekulé von Stradonitz
Resultado de la búsqueda 'August Kekulé von Stradonitz'
August Kekulé von Stradonitz (1829-1896), químico alemán conocido por formular la estructura cíclica de la molécula de benceno.
es.encarta.msn.com /August_Kekul%C3%A9_von_Stradonitz.html   (113 words)

  
 Kekulé   (Site not responding. Last check: 2007-09-19)
Friedrich August Kekulé was born in Darmstadt, Germany in 1829.
He attended the Gymnasium of his hometown where he excelled at languages and drawing.
As he was working on his textbook, ___ on evening, he dozed off and dreamed that a chain of atoms reached around and grabbed onto it's own tail, creating the hexagonal shape of benzene.
www.sdsc.edu /Education/Elemnet/rlink/history/kekule.html   (562 words)

  
 MSU Chemistry - Genealogy Work Area - K   (Site not responding. Last check: 2007-09-19)
von Stradonitz, Friedrich (1829-1896) German chemist who introduced the concept of the chemical bonds, the tetravalent carbon atom, and the use of structural formulas to explain the formation of molecules.
He proposed a structure for benzene consisting of a ring of carbon atoms with alternating double and single bonds.
He thought the application of atomism was useful to explain the chemical properties of compounds, but also believed in the actual existence of atoms.
www.chemistry.msu.edu /Genealogy/work-area-K.shtml   (1271 words)

  
 BSHM: Gazetteer -- LONDON People H-M
Friedrich August Kekul (von Stradonitz) (1829-1896) was one of the principal chemists of the 19C.
In this way began the structure theory." Kekul's vision and notation helped lead to the present chemical notation within a decade.
He is even more famous for a later dream, gazing into a fire in Ghent, Belgium, in 1865, when he visualized the hexagonal ring structure of benzene, described as 'the most brilliant piece of prediction in organic chemistry'.
www.dcs.warwick.ac.uk /bshm/zingaz/LondonPeopleH.html   (7753 words)

  
 Freidrich Kekule
Freidrich August Kekule is known as the principle founder of structural organic chemistry.
After researching his contribution to chemistry and theory, develop 12 trivia cards about Kekule and present them in a question-and-answer-trivia format.
Visit these sites to help you research Freidrich August Kekule's contribution to chemistry.
highered.mcgraw-hill.com /sites/0078600510/student_view0/unit5/unit_project_2.html   (107 words)

  
 Friedrich August Kekulé von Stradonitz - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-09-19)
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 Encyclopedia.com - Results for Kekul?on Stradonitz, Friedrich August   (Site not responding. Last check: 2007-09-19)
Encyclopedia.com - Results for Kekul?on Stradonitz, Friedrich August
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 Friedrich August Kekulé von Stradonitz : Kekule von Stradonitz   (Site not responding. Last check: 2007-09-19)
Friedrich August Kekulé von Stradonitz : Kekule von Stradonitz
Friedrich August Kekulé von Stradonitz : Kekule von Stradonitz
It uses material from the wikipedia article Friedrich August Kekulé von Stradonitz : Kekule von Stradonitz.
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