Metals organoleads

Organolead compounds containing a lead-transition metal bond are also known. When a lead(II) or lead(IV) compound reacts with Co2(CO)gL2 complexes (L = tert -phosphine, -arsine or a phosphite), the blue, air-stable Pb[Co(CO)3L]4 derivatives are obtained371. 

Because of the lower metal-carbon and metal-hydrogen bond strength, organolead hydrides are particularly unstable species and represent the least stable of those of the group 14 elements. Triorganolead hydrides are obtained at low temperatures by reduction of the halides with LiAlH4 (equation 45), but they decompose at 0 °C. 

Aquatic life in proximity to mining activities, areas where lead arsenate pesticides are used, metal finishing industries, organolead industries, and areas of lead aerosol fallout... 

See related TRIALKYLSILYLOXY ORGANOLEAD DERIVATIVES See also the partially alkylated class ALKYLNON-METAL hydrides... 

Table 4.75. Carbon-Metal Coupling Constants of Representative Organo-Silicon [483], Organotin [484], and Organolead Compounds [485] (in Hz).

See ALKYLAHJMINHJM DERIVATIVES, ARYLMETALS, ARYLMETALS, LITHIUM PERALKYLURANATES, TRIALKYLSILYLOXY ORGANOLEAD DERIVATIVES See also METAL ACETYLIDES... 

Compounds of a RM=MR pattern are unknown till now, but quantum-chemical calculations point out the possibility that M=M bonds between Si and Ge atoms with appropriate substituents may exist163,164. The synthesis of the organolead ArPbPbAr, where Ar = 2, 6-(2, 4, 6-i-Pr3C6H2)2CgH3, was recently reported164. However, the X-ray data showed that the Pb—Pb bond is probably a single bond, i.e. the Pb—Pb bond (3.19 A) is a little shorter than in metallic lead (3.49 A) and the Pb—Pb—C angle is 94.3°. 

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