A new range of heterocyclic telluronium salts based on 1,2,4,5-bis(telluracyclopentano)benzene: Synthesis and spectroscopic considerations
✍ Scribed by Hatif A. Al-Shirayda
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 380 KB
- Volume
- 4
- Category
- Article
- ISSN
- 1042-7163
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✦ Synopsis
The reactions of 1,2,4,5-tetrakis(brornomethyl)benzene with sodium organotellurates (NaTeR) afford white telluronium salts of the type XRTe(CH2)2Caz(CHj2TeRx where R = p-EtOCa4 and p-MeOCa4 and X = Br.
Reactions {of 1,2,4,5-tetrakis(bromomethyl)benzene with elemental tellurium powder and an excess of sodium iodide in dimethyl sulfoxide (DMSO) give 1,2,4,5-bis(l ,I -diiodotelluracyclopentano)benzene, C,&lI0Te2I4 as orange-red crystals in poor yield, together with a yellow amorphous precipitate as the main product, the structure of which is still obscure.
Reduction of the bis(diiodide) compound gave a light and air sensitive ditelluride, CI$IIOTe2, which, on treatment with ethyl bromide, afforded a white telluronium salt of l ,2,4,5-bis(l'-bromo-l'-ethyl-telluracyclopentano)benzene, CIf120TezBr,. The synthesis, spectroscopic data, and solution properties of the prepared compounds are reported and discussed.