Organoleads organomercurials

Certain OP compounds including DFP, mipafox, and leptophos Organomercury and organolead compounds... 

Organomercury and organolead compounds are much less reactive => they are often volatile and are stable in air. 

Thermal and photochemical decomposition of organomercury and organolead compounds has been used to produce alkyl radicals for the homol5diic alkylation of heteroaromatics. Dibenzylmercury has been... 

Environmental Tin, lead and mercury Organolead, organotin and organomercury compounds Helium plasma (Hewlett Packard) 1-2.5 ng ml"1 Liu et al. (1994)... 

Liu, Y., Lopez-Avila, V, Alcaraz, M. and Beckert, W.E. (1994) Simultaneous determination of organotin, organolead, and organomercury compounds in environmental samples using capillary GC-AED./. High. Resol. Chromatogr, 17, 527-536. 

Outside of the antiknock field, the commercial applications of organolead compounds are relatively few and quite small. The largest of these applications is in the manufacture of organomercury fungicides by alkylation. This application is old and is relatively static. Other alkylations consume a little tetraalkyllead compound. A small amount of tetra-methyllead has long been used to fill Geiger counters. 

Methylmercury species in sediment samples were speciated in a study by Hintelman et al. [89]. Detection limits were 1 pg (as Hg) in dry sediment samples. Organomercury compounds, along with organotin and organolead compounds, were also separated in another study by Prange and Jantzen [90]. Detection limits were three orders of magnitude lower than those reported previously in the literature. A quartz transfer line was used in this study. 

Forsyth, D.S., Taylor, J. Detection of organotin, organomercury, and organolead compounds with a pulsed discharge detector (PDD). Anal. Bioanal. Chem. 374, 344-347 (2002)... 

Several efforts have been carried out to develop a new aqueous derivatization reagent. Phenylation with sodium tetraphenylborate is a promising procedure for the speciation of several metals. Its application for organomercury analysis has been comprehensively studied [10]. Sodium tetrapropylborate is another reagent that has been investigated for determining organolead, tin, and mercury compounds [1]. However, its application is limited because it is not commercially available. 

The common compounds of lead derive from the +2 oxidation state. As a number of the periodic group IV-A, lead also forms tetravalent compounds, which are covalent. The most important are the tetraalkylleads, which are used as gasoline additives. The Pb - C bond is very non-polar, and the organolead species tend to be kinetically inert, like organomercurials. 

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