- The reaction of phenoxatellurine with single-electron oxidizers revisited
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The reaction of phenoxatellurine (PT) with the known single-electron oxidizers AlCl3/CH2Cl2, [NO][SbF6] and [NO][BF4] provided the diamagnetic products [(PT)CH2Cl][AlCl4] (1), [PT2][SbF6]2 (2) and [PT3][BF4]2 (3), respectively, which were fully characterized by X-ray crystallography. The dications [PT2]2+ and [PT3]2+ present in 2 and 3 can be regarded as dimers of the elusive radical cation [PT]+ or as adduct between this dimer and neutral PT, respectively. The stacking between the aromatic layers of [PT2]2+ and [PT3]2+ can be best described using the pancake bonding (PB) model. The computational analysis uncovers the essential role of London dispersion effects for the stacking process and reveals the Te-Te interactions to be dominated by non-covalent bonding. The results are compared with those of the related thianthrene (TA) system.
- Mostaghimi, Farzin,Lork, Enno,Hong, Intek,Roemmele, Tracey L.,Boeré, René T.,Mebs, Stefan,Beckmann, Jens
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- Anion Chelation via Double Chalcogen Bonding: The Case of a Bis-Telluronium Dication and Its Application in Electrophilic Catalysis via Metal-Chloride Bond Activation
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Telluronium cations have long been known to engage their counteranions via secondary interactions. Yet, this property has rarely been exploited for anion binding. Motivated by such an application, we have now synthesized a bis-Telluronium dication ([3]2+)
- Gabba?, Fran?ois P.,Zhou, Benyu
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p. 8625 - 8630
(2021/06/28)
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