Anion Recognition with Antimony(III) and Bismuth(III) Triaryl-Based Pnictogen Bonding Receptors.
Chemistry
; 28(67): e202201838, 2022 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-35968660
ABSTRACT
The synthesis and characterisation of a library of acyclic antimony(III) and bismuth(III) triaryl pnictogen bonding (PnB) receptor systems are reported. In the first-generation receptor series, quantitative 1 Hâ
NMR chloride titration experiments in THF solvent media reveal halide anion binding potency is intimately correlated with both the electronic-withdrawing nature of the aryl- substituent and the polarisability of the PnB donor. Further extensive anion binding investigations with the most potent Sb- and Bi-based PnB receptors 1â
Sb2CF3 and 1â
Bi2CF3 , reveal novel selectivity profiles, both displaying Cl- selectivity relative to the heavier halides and, impressively, to a range of highly basic oxoanions. The synthesis and preliminary chloride anion binding studies of a series of novel tripodal tris-proto-triazole triaryl Sb(III) and Bi(III) mixed PnB-HB receptor systems are also described. Whereas parent triphenyl Sb(III) and Bi(III) compounds are incapable of binding Cl- in THF solvent media, the PnB-triazole HB host systems exhibit notable halide affinity.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Bismuto
/
Antimônio
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article