1. The metal-carbon double bond
The simple metal-carbon bond can be easily created. First demonstrated by Frankland's discovery of organozinc compounds, then by Grignard's discovery of organomagnesium compounds, it became a general feature of the synthesis of organometallic compounds in which the metal is a transition element.
Interpreted as a covalent double bond, it suggests the existence of metal-carbon double bonds, in which the carbon group appears as a carbene. The problem is the chemical route to these compounds. The discovery was made by E.O. Fischer.
1.1 First synthesis of a complex containing a carbene ligand
We will reason as follows. In [W(CO) 6 ], tungsten receives 6 doublets from the 6 carbon oxide molecules....
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The metal-carbon double bond
Cumulene-type compounds
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