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Ernst Otto Fischer

 
Scientist: Ernst Otto Fischer

German inorganic chemist (1918–1994)

Fischer, the son of a physics professor, was educated in his native city at the Munich Institute of Technology, where he obtained his PhD in 1952. He taught at the University of Munich serving as professor of inorganic chemistry from 1957 to 1964, when he became the director of the Institute for Inorganic Chemistry at the Institute of Technology.

Fischer is noted for his work on inorganic complexes. In 1951 two chemists, T. Kealy and P. Pauson, were attempting to join two five-carbon (cyclopentadiene) rings together and discovered the compound C5H5FeC5H5, which they proposed had an iron atom joined to a carbon atom on each ring.

Fischer, on reflection, considered such a structure inadequate for he was unable to see how it could provide sufficient stability with its carbon–iron–carbon bonds. The British chemist Geoffrey Wilkinson suggested a more novel structure in which the iron atom was sandwiched between two parallel rings and thus formed bonds with the electrons in the rings, rather than with individual carbon atoms. Compounds of this type are called ‘sandwich compounds’.

By careful x-ray analysis Fischer confirmed the proposed structure of ferrocene, as the compound was called, and for this work shared the Nobel Prize for chemistry with Wilkinson in 1973. Fischer went on to do further work on transition-metal complexes with organic compounds and was one of the leading workers in the field of organometallic chemistry.

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Wikipedia: Ernst Otto Fischer
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Ernst Otto Fischer
Born 10 November 1918
Solln, since 1938 part of Munich, German Empire
Died July 23, 2007 (aged 88)
Munich, Germany
Nationality Germany
Fields Chemistry
Institutions Technical University of Munich
Alma mater Technical University of Munich
Doctoral advisor Walter Hieber
Known for Organometallic compounds
Ferrocene
Notable awards Nobel Prize for Chemistry (1973)

Ernst Otto Fischer (November 10, 1918July 23, 2007) was a German chemist who won the Nobel Prize for pioneering work in the area of organometallic chemistry.

He was born in Solln, near Munich. His parents were Karl T. Fischer, Professor of Physics at the Technical University of Munich (TU), and Valentine née Danzer. He graduated in 1937 with Abitur. Before the completion of two years' compulsory military service, the Second World War broke out, and he served in Poland, France, and Russia. During a period of study leave, towards the end of 1941 he began to study chemistry at the Technical University of Munich. Following the end of the War, he was released by the Americans in the autumn of 1945 and resumed his studies, graduating in 1949.

He worked on his doctoral thesis as an assistant to Professor Walter Hieber in the Inorganic Chemistry Institute, His thesis was entitled "The Mechanisms of Carbon Monoxide Reactions of Nickel(II) Salts in the Presence of Dithionites and Sulfoxylates".[1] After receiving his doctorate in 1952, he continued his research on the organometallic chemistry of the transition metal and indicated with his lecturer thesis on "The Metal Complexes of Cyclopentadienes and Indenes".[2] that the structure postulated by Pauson and Kealy might be wrong. Shortly after he published the structural data of ferrocene, the sandwich structure of the η5 (pentahapto) compound.[3] He was appointed a lecturer at the TU in 1955 and, in 1957, professor and then, in 1959, C4 professor. In 1964 he took the Chair of Inorganic Chemistry at the TU.

In 1964, he was elected a member of the Mathematics/Natural Science section of the Bavarian Academy of Sciences. In 1969 he was appointed a member of the German Academy of Natural Scientists, Leopoldina and in 1972 was given an honorary doctorate by the Faculty of Chemistry and Pharmacy of the University of Munich.

He lectured across the world on metal complexes of cyclopentadienyl, indenyl, arenes, olefins, and metal carbonyls. In the 1960s his group discovered a metal alkylidene and alkylidyne complexes, since referred to as Fischer carbenes and Fischer-carbynes.[4] Overall he published about 450 journal articles and he trained many PhD and postdoctoral students, many of whom went on to noteworthy careers. Among his many foreign lectureships, he was Firestone Lecturer at the University of Wisconsin–Madison (1969), visiting professor at the University of Florida (1971), and Arthur D. Little visiting professor at the Massachusetts Institute of Technology (1973).

He has received many awards including, in 1973 with Geoffrey Wilkinson, the Nobel Prize in Chemistry for his work on organometallic compounds.

He died on July 23, 2007 in Munich.[5] Fischer was, at the time of his death, the oldest living German Nobel laureate. He was succeeded by Manfred Eigen, who shared the Nobel Prize in Chemistry in 1967 and is nine years younger than Fischer was.

References

  1. ^ Hieber, W.; Fischer, E. O. (1952). "Ũber den Mechanismus der Kohlenoxydreaktion von Nickel(II)- und KobaIt(II)-Salzen bei Gegenwart von Dithionit". Zeitschrifft anorganische und allgemeine Chemie 269: 292–307. doi:10.1002/zaac.19522690417. 
  2. ^ E. O. Fischer (1955). "Metallverbindungen des Cyclopentadiens und des Indens". Angewandte Chemie 67 (7): 211. doi:10.1002/ange.19550670708. 
  3. ^ E. O. Fischer, W. Pfab (1952). "Zur Kristallstruktur der Di-Cyclopentadienyl-Verbindungen des zweiwertigen Eisens, Kobalts und Nickels". Z. Naturforsch. B 7: 377–379. 
  4. ^ Fischer, E. O., "On the way to carbene and carbyne complexes", Advances in Organometallic Chemistry, 1976, volume 14, 1-32
  5. ^ derStandard.at
  • C. Elschenbroich, A. Salzer ”Organometallics : A Concise Introduction” (2nd Ed) (1992) from Wiley-VCH: Weinheim. ISBN 3-527-28165-7
  • Wolfgang A. Herrmann (2003). "Mediator between chemical worlds, aesthete of sciences, and man of Bavaria: Ernst Otto Fischer". Journal of Organometallic Chemistry 684 (1-2): 1–5. doi:10.1016/S0022-328X(03)00715-0. 
  • E. O. Fischer (1952). "Über Cycopentadien-Komplexe des Eisen und des Kobalts". Angewandte Chemie 64 (22): 620. doi:10.1002/ange.19520642206. 
  • Wolfgang A. Herrmann (2007). "Obituary: Ernst Otto Fischer (1918–2007)". Nature 449: 156. doi:10.1038/449156a. 

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