Andreas Orthaber, Ferdinand Belaj and Rudolf Pietschnig, Comptes Rendus Chimie 13 (2010), 923–928. Section 3.2 analyses the strongly polar P–O sigma bond and oxygen lone-pair negative hyperconjugation; this is not a claim that every orbital-localization scheme assigns the same bond order.
Rudolf Pietschnig Created 2026-10-20 Updated 2026-11-05
Rudolf Pietschnig coauthored experimental and computational work on the hydrogen-chloride adduct of trimethylphosphine oxide. The study analyses the polar phosphorus-oxygen sigma bond and interactions involving oxygen lone pairs.
The example shows why a conventional multiple-bond drawing need not identify a unique localized-orbital description. Experimental structure and electronic calculations constrain different aspects of chemical bonds.[ref]
Computational and experimental approaches to the molecular structure of the HCl adduct of Me3PO by Andreas Orthaber and others. Research topic and author attribution in the primary publication