Theoretical characterization of the chemical bonds of some three-membered ring compounds through QTAIM theory

In this paper, we investigate the nature of the carbonyl and the intraring C–C, C–N, C–O, N–N, O–O and N–O bonds of cyclopropanone and the following cyclopropanone derivatives: aziridine-2-one (1); oxirane-2-one (2); 1,2-diaziridine-3-one (3); 1,2-dioxirane-3-one (4); 1,2-oxaziridine-3-one (5); cyclopropane-1,2-dione (6); aziridine-2,3-dione (7); and oxirane-2,3-dione (8). The intramolecular distribution of the electronic charge density and the L(r) = −¼∇2ρ(r) function have been investigated within the framework of the quantum theory of atoms in molecule theory. This methodology allowed us to characterize the bonds of cyclopropanone and the cyclopropanone derivatives studied here.