On the Reaction of Pacman‐Phosphanes with Lewis Acids
Year: 2025
Type: article
Abstract: The reactions of Pacman phosphanes (1a) with Lewis acids such as R3B (R = C6H5, C6F5) and GaCl3 were investigated. While equilibria between mono‐ and di‐adducts were found in the reaction with BPh3, B(C6F5)3 preferentially formed the di‐adduct (1a·2B(C6F5)3), which could be isolated and fully characterized. density functional theory (DFT) calculations showed that the N‐bonded adducts are thermodynamically more stable than the P‐bonded adducts. In contrast to the reaction of the Pacman phosphane with boranes, GaCl3 reacted with 1a to give an unusual [Pacman‐GaCl2]+[GaCl4]− salt, featuring a nearly planar GaN2C2 heterocycle as part of the Pacman macrocycle. In addition, the coordination geometry on one P atom changes from triple to an unusual quadruple coordination, although it is still a formal P atom in the + III oxidation state, as shown by quantum chemical calculations.
Source: Chemistry - A European Journal
Authors: Leon Ohms, Pascal Schmidt, Jonas Surkau, Jonas Bresien, Axel Schulz
Institutions: University of Rostock, Leibniz Institute for Catalysis
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,640
OpenAlex ID: W4411374530