Competition between Intra and Intermolecular Pnicogen Bonds: Complexes between Naphthalene Derivatives and Neutral or Anionic Bases.
Chemphyschem
; 23(11): e202200173, 2022 06 03.
Article
en En
| MEDLINE
| ID: mdl-35385595
ABSTRACT
The PnF2 (Pn=P,As,Sb,Bi) on a naphthalene scaffold can engage in an internal pnicogen Pnâ
â
â
N bond (PnB) with an NH2 group placed close to it on the adjoining ring. An approaching neutral NH3 molecule can engage in a second PnB with the central Pn, which tends to weaken the intramolecular bond. The presence of the latter in turn weakens the intermolecular PnB with respect to that formed in its absence. Replacement of the external NH3 by a CN- anion causes a fundamental change in the bonding pattern, producing a fourth covalent bond with Pn, which rearranges into a trigonal bipyramidal motif. This addition disrupts the internal Pnâ
â
â
N pnicogen bond, recasting the PnF2 â
â
â
NH2 interaction into an NHâ
â
â
F H-bond.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Naftalenos
Idioma:
En
Revista:
Chemphyschem
Asunto de la revista:
BIOFISICA
/
QUIMICA
Año:
2022
Tipo del documento:
Article
País de afiliación:
Polonia