Transition from covalent to noncovalent bonding between tetrel atoms.
Phys Chem Chem Phys
; 26(22): 15978-15986, 2024 Jun 06.
Article
em En
| MEDLINE
| ID: mdl-38775057
ABSTRACT
The strength and nature of the bonding between tetrel (T) atoms in R2Tâ¯TR2 is examined by quantum calculations. T atoms cover the range of Group 14 atoms from C to Pb, and substituents R include Cl, F, and NH2. Systems vary from electrically neutral to both positive and negative overall charged radicals. There is a steady weakening progression in T-T bond strength as the tetrel atom grows larger, transitioning smoothly from a strong covalent to a much weaker noncovalent bond for the larger T atoms. The latter have some of the characteristics of a ditetrel bond, but there are also significant deviations from a classic bond of this type. The T2Cl4- anions are more strongly bonded than the corresponding cations, which are in turn stronger than the neutrals.
Texto completo:
1
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article