title: [1,2,3]Triazolo[1,5-a]pyridyl phosphines reflecting the influence of phosphorus lone pair orientation on spectroscopic properties.
abstract: A series of new triazolopyridine-based phosphines has been prepared. These compounds revealed unexpected spectroscopic patterns. In particular, the NMR spectra are highly dependent on the relative conformational preference of the phosphine substituent at C7. Here, we report on their complete NMR analysis, X-ray structures and DFT calculations that confirm the particular arrangement of the phosphorus lone pair orbital related to the substituent pattern of the chosen phosphine.
authors.affiliation: Laboratoire de stéréochimie (UMR7509), CNRS-Université de Strasbourg (ECPM), 25 rue Becquerel, 67087, Strasbourg, France.
authors.forename: Rafael
authors.initials: R
authors.lastname: Ballesteros-Garrido
authors.forename: Laurence
authors.initials: L
authors.lastname: Bonnafoux
authors.forename: Fernando
authors.initials: F
authors.lastname: Blanco
authors.forename: Rafael
authors.initials: R
authors.lastname: Ballesteros
authors.forename: Frédéric R
authors.initials: FR
authors.lastname: Leroux
authors.forename: Belén
authors.initials: B
authors.lastname: Abarca
authors.forename: Françoise
authors.initials: F
authors.lastname: Colobert
authors.forename: Ibon
authors.initials: I
authors.lastname: Alkorta
authors.forename: José
authors.initials: J
authors.lastname: Elguero
mesh_terms: D018360:Crystallography, X-Ray; D007477:Ions / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D010720:Phosphines / Q000138:chemical synthesis / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D014230:Triazoles / Q000737:chemistry*
chemical_list: D007477:Ions; D010720:Phosphines; D014230:Triazoles; D010758:Phosphorus