Organometalic compounds presented by Asma umer ghazi university Dera ghazi khan

1. Jens Martensson
Organometallic Compounds
History
1
Presented by: Asma Umer
Ghazi university Dera
Ghazi khan

2. Organometallic
compounds
Ø Compounds that contain carbon-metal bonds. C-M.
Ø Carbon is nucleophilic in nature in C-M.
Ø Classified on the basis of metals. i.e C-Cu, C-Mg, C-Zn.
Ø Used to form C-C bond in important organic compounds.
Historical
Background
Ø Some organometallic compounds have been known for a
century or more.
Ø The boom in organometallic chemistry occurred during the
3rd quarter of 20th century in US, UK and Germany.
Ø The history is discussed according to different era of
development.

3. Jens Martensson
1760. The discipline was born in military pharmacy Paris. A
cadet discovered tetramethyldiarsine by following reaction..
3
1760-1900: The First
Complexes
1827. The discovery of first π-Complex namely Ziese Salt.
1850s. Frankland synthesized metal alkyl complex ZnEt2.
1863. Friedal and Craft prepared organosilanes RnSiCl4-n .
1890. First binary metal carbonyl compounds [Ni(CO)4].

4. Jens Martensson 4
1900-1950: Grignard,
Sabatier and Catalysis
1900. Victor Grignard discovered organomagnesium halides.
1922. Fishcer and Tropsch reported hetergenously catalyzed
reaction between CO and H2.
1930. Reilhen synthesized
1939-1948. Reppe worked on catalysis of transformation of
alkynes to cyclooctatetraene.
1912. Sabatier and Senderens work on hydrogenation using Ni.
Both shared Nobel prize in 1912.

5. Jens Martensson 5
1950-1960
1952. At Harvard University, Willkinson and Woodward
published the first sandvich structure bis-cyclopentadienyl-iron
called ferrocene an 18 electron complex and won a Nobel Prize
in 1973.
Discovery of Ferrocene
and Boom of
Organometallic
1955. Cotton and Willkinson introduced fluxional complexes.
1955. Ziegler and Natta discovered olefin polymerization using
titanium and aluminum compounds. Got Nobel Prize in 1963.

6. Jens Martensson
6
6
1962. Vaska published 16-electron complex.
1964. First metal carbene complex introduced by Fischer.
1971. Yves Chauvin proposed mechanism of olefin metathesis.
1973-80. Sharpless reported epoxidation of allylic alcohols by
won Nobel prize in 2001.

7. Thank You