## Topological analysis of tetraphosphorus oxides (P4O6+n (n = 0–4))

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2013##### Author

Acelas, Nancy Y.

López, Diana

Mondragón, Fanor

Tiznado, William

Flórez, Elizabeth

Acelas, Nancy Y.; Universidad de Antioquia

López, Diana; Universidad de Antioquia

Mondragón, Fanor; Universidad de Antioquia

Tiznado, William; Universidad Andres Bello

Flórez, Elizabeth; Universidad de Medellín

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Quantum chemical calculations were used to analyze the chemical bonding and the reactivity of phosphorus oxides (P4O6+n (n = 0–4)). The chemical bonding was studied using topological analysis such as atoms in molecules (AIM), electron localization function (ELF), and the reactivity using the Fukui function. A classification of the P-O bonds formed in all structures was done according to the coordination number in each P and O atoms. It was found that there are five P-O bond types and these are distributed among the five phosphorus oxides structures. Results showed that there is good agreement among the evaluated properties (length, bond order, density at the critical point, and disynaptic population) and each P-O bond type. It was found that regardless of the structure in which a P-O bond type is present the topological and geometric properties do not have a significant variation. The topological parameters electron density and Laplacian of electron density show excellent linear correlation with the average length of P-O bond in each bond type for each structure. From the Fukui function analysis it was possible to predict that from P4O6 until P4O8 the most reactive regions are basins over the P.

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