Lead-carbon bonds

Each of the four lead-carbon bonds forms by the overlap of an empty valence orbital on the metal ion with a lone pair on a carbon atom. 

Reactions at a Group VIII Metal Center The Ni, Pd, Pt Triad 10.3.8.9. Reactions of Tin-Carbon and Lead-Carbon Bonds... 

Organic derivatives of lead are less stable to heat and light and more readily decomposed than those of other elements of the fourth main Group also the lead-carbon bond is considerably more easily broken by acids and oxidizing agents. 

Sulphur Dioxide. The observed products and high rates of insertion of sulphur dioxide into tin-carbon bonds in organotin allenes and alkynes have been interpreted in terms of an electrophilic cleavage mechanism. Such a mechanism is also proposed for sulphur dioxide insertion into mercury-carbon and into lead-carbon bonds. The mechanism of sulphur dioxide insertion into transition metal (Mo, W, or Mn)-carbon bonds is again similar. ... 

Some special procedures which are not discussed are mentioned in Table III. Also of interest are those reactions of functionally substituted organolead compounds, in which the functional groups are exchanged without cleavage of the lead-carbon bond (see Table III). 

The fission of the lead-carbon bond is caused by a number of reagents as outlined below24. 

Finally, lead chemical compounds can be classified as organic (i.e. containing carbon and hydrogen) or inorganic. Organic lead compounds comprising one or more lead-carbon bond are described as organolead compounds. Examples of these include tetraethyl lead and tetramethyl lead, both of which have been extensively used as anti-knock additives in petrol. 

In order to quantify the metal species, the authors sought to postcolumn react the lead species with 4-(2-pyridylazo)-resorcinol (PAR) in order to form intense red complexes, which could be detected using absorption monitoring. However, because only the diallqrllead compounds and Pb(II) were complexed by PAR, it was necessary to mix the effluent with a dilute solution of iodine prior to the addition of the PAR reagent. This was done to cleave the lead-carbon bonds of the tri- and... 

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