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
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