Cationic and anionic diorganylbismuth compounds

In addition, an intramolecularly coordinated cationic diorganylbismuth compound, bis[2-(A,A-dimethylaminomethyl)phenyl]bismuth hexafluoro-phosphate 10, has been prepared in 65% yield by the action of TlPFg on the corresponding chlorobismuthine [970M3597]. 

Compounds 3 and 4 are generated by disproportionation of the corresponding phenyltetrakis(trifluoroacetato)bismuthate [PhBi(02CCp3)4] derivatives however, attempts to isolate compounds 3 and 4 have failed probably because of their subsequent disproportionation reactions [94JCS(D)2545]. 

The IR spectra of compounds 1,2 and 5 are recorded 1 shows a very strong 

IR absorption at 2010 cm due to the antisymmetric N3 stretching, while 2 shows IR absorptions at 2030 (CN stretching) and 470 cm (NSC bending vibration), indicating the presence of N-bonded NCS groups [79JOM(166)365]. The IR spectrum of compound 5 exhibits absorptions at 1680 and 1180-1120 cm [84HCA586], 

Compounds 1 and 2 show Raman bands in acetone at 280 and 235 cm respectively, due to the Bi-X symmetric stretching mode. The mass spectrum of compound 5 contains characteristic signals due to Ph2Bi(02CCFj)2, Ph4Bi, Bi2, PhBi02CCp3 and Ph2Bi ions. 

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