Thallium complexes mixed halides

Sutton (666) and Kul ba (458-460) have prepared a number of bipyridyl and phenanthroline complexes of various thallium(III) salts those with nitrate and perchlorate are generally bis-chelate compounds, whereas the halides give compounds of stoichiometry TIX3L. Stability constants have been reported for some of the complexes (457). Other mixed ligand species containing ethylenediamine (461) and oxalate (456) and salts containing both bipyridyl and phenanthroline coordinated to the same thallium(III) ion (456) are also claimed. 

Fromherz and his colleagues began in 1927 a study of the halide complexes of the family tin(II), thallium(I), and lead(II), > > where the corresponding gaseous ions contain two s electrons. The present author has measured antimony(III), while Hume and Newman studied bismuth(III). This family became interesting to solid state physicists investigating the mixed crystals with alkali halides, and Seitz proposed, 1938, that the weaker band of T1(I) in such crystals is caused by the atomic transition Sq(6s ) —> Pi(6s6 ), while the stronger band is caused by... 

---