Thalliums organo

This section contains references other than those in the main Report, which have been abstracted during the literature search, and are considered relevant to the chemistry described in this Chapter. The references are arranged according to whether they are aluminium, gallium, indium, or thallium organo-metals and then in alphabetical order according to the name of the first author. Where the information has been obtained from Chemical Abstracts, only the abstracts reference number is given. 

Most of the studies on organo-gallium, indium, and thallium porphyrin complexes have focused on synthesis and properties of the complexes, and rather little attention has been devoted to reaction chemistry. Two areas which have received some attention are the insertion of small molecules (SO2 or CO2) into the metal—carbon bonds and photochemical metal—carbon bond cleavage. The... 

Fluorination with Thallium(I) Fluoride and Organo-Substituted Thallium(I) Fluorides... 

In a first approximation supra-Cp metal complexes can be prepared the same way as normal or other Cp-metal and organo-metal bonds in general. The methods used most often (see Appendix) are the metathesis reaction [Eq. (1)] followed in number by oxidative additions (Eq. (2)] and metallation/deprotonation reactions [Eq. (3)]. The latter is especially important for the cyclpentadienyl alkali metal compounds. A useful variation of reaction (3) is the formation of CpTl in an acid/base reaction from cyclopentadiene and thallium ethoxide [Eq. (3b)]. This represents a convenient route to cyclopentadienylthallium compounds, which are also valued (in place of Cp alkalis) as mild Cp-transfer reagents for the synthesis of difficultly isolable cyclopentadienyl derivatives (77). 

Thallium(III) compounds dominate the known organo-metallic chemistry of thallium. The structural chemistry organothallium(III) compounds has been reviewed. ... 

It will be seen that a number of tlie reactions afford means of obtaining organo-tballium derivatives. In the case of organo compounds of the elements of Group V., it may be stated that phosphorus and antimony chlorides yield no organo-thallium derivatives, whereas arsenic and bismuth chlorides are capable of yielding eompoimds of the type... 

Stability of organo-mercury, -thallium, -tin and -lead complexes with anionic and neutral ligands... 

The metals of the aluminium sub-group are permanent in the air at ordinary temperatures, but when heated in oxygen or the air they become coated with their oxide. The volatility of the metals increases with the atomic weights, and the heavier metals are more easily reduced than those of lower atomic weight. The metals are all malleable, fusible, have small atomic volumes and form hydroxides, M(OH)3, which are typically amphoteric in the first three elements of the sub-group and basic only in the case of thallium. The last four members of the family form alums, and both aluminium and thallium form organo-metallic compounds, resembling zinc in this respect. 

The stoichiometry determines the product. Thallium(III) chloride reacts similarly, but only the bis(organo)thallium chloride is formed. Thallium(III) chloride also reacts with... 

Relatively little work has been published in the area of organo-thallium chemistry this year. Vinyl ketones have been shown to undergo efficient arylation, leading to B-aryl ketones, when treated... 

---