RUO Principal

Repositorio Institucional de la Universidad de Oviedo

Ver ítem 
  •   RUO Principal
  • Producción Bibliográfica de UniOvi: RECOPILA
  • Artículos
  • Ver ítem
  •   RUO Principal
  • Producción Bibliográfica de UniOvi: RECOPILA
  • Artículos
  • Ver ítem
    • español
    • English
JavaScript is disabled for your browser. Some features of this site may not work without it.

Listar

Todo RUOComunidades y ColeccionesPor fecha de publicaciónAutoresTítulosMateriasxmlui.ArtifactBrowser.Navigation.browse_issnPerfil de autorEsta colecciónPor fecha de publicaciónAutoresTítulosMateriasxmlui.ArtifactBrowser.Navigation.browse_issn

Mi cuenta

AccederRegistro

Estadísticas

Ver Estadísticas de uso

AÑADIDO RECIENTEMENTE

Novedades
Repositorio
Cómo publicar
Recursos
FAQs

Synthesis and structure of tridentate bis(phosphinic amide)-phosphine oxide complexes of yttrium nitrate. Applications of (31)P,(89)Y NMR methods in structural elucidation in solution

Autor(es) y otros:
Popovici, Cristinel; Fernández de las Nieves, Ignacio; Oña Burgos, Pascual; Roces Fernández, LauraAutoridad Uniovi; García-Granda, SantiagoAutoridad Uniovi; López Ortiz, Fernando
Fecha de publicación:
2011
Versión del editor:
http://dx.doi.org/10.1039/c1dt10194c
Citación:
Dalton Transactions, 40(25), p. 6691-6703 (2011); doi:10.1039/c1dt10194c
Descripción física:
p. 6691-6703
Resumen:

The synthesis and characterisation of a tridentate ligand containing two diphenylphosphinic amide side-arms connected through the ortho position to a phenylphosphine oxide moiety and the 1 : 1 and 2 : 1 complexes formed with yttrium nitrate are reported for the first time. The free ligand (RP1*,SP3*)-11 is obtained diastereoselectively by reaction of ortho-lithiated N,N-diisopropyl-P,P-diphenylphosphinic amide with phenylphosphonic dichloride. Complexes [Y((RP1*,SP3*)-11)(NO3)3] and [Y((RP1*,SP3*)-11)2(NO3)](NO3)2 were isolated by mixing ligand 11 with Y(NO3)3·6H2O in acetonitrile at room temperature in a ligand to metal molar ratio of 1 : 1 and 2 : 1, respectively. The 1 : 1 derivative is the product of thermodynamic control when a molar ratio of ligand to yttrium salt of 1 : 1 is used. The new compounds have been characterised both as the solid (X-ray diffraction) and in solution (multinuclear magnetic resonance). In both yttrium complexes the ligand acts as a tridentate chelate. The arrangement of the two ligands in the 2 : 1 complex affords a pseudo-meso structure. Tridentate chelation of yttrium(III) in both complexes is retained in solution as evidenced by 89Y NMR data obtained via31P,89Y-HMQC, and 89Y,31P-DEPT experiments. The investigation of the solution behaviour of the Y(III) complexes through PGSE NMR diffusion measurements showed that average structures in agreement with the 1 : 1 and 1 : 2 stoichiometries are retained in acetonitrile.

The synthesis and characterisation of a tridentate ligand containing two diphenylphosphinic amide side-arms connected through the ortho position to a phenylphosphine oxide moiety and the 1 : 1 and 2 : 1 complexes formed with yttrium nitrate are reported for the first time. The free ligand (RP1*,SP3*)-11 is obtained diastereoselectively by reaction of ortho-lithiated N,N-diisopropyl-P,P-diphenylphosphinic amide with phenylphosphonic dichloride. Complexes [Y((RP1*,SP3*)-11)(NO3)3] and [Y((RP1*,SP3*)-11)2(NO3)](NO3)2 were isolated by mixing ligand 11 with Y(NO3)3·6H2O in acetonitrile at room temperature in a ligand to metal molar ratio of 1 : 1 and 2 : 1, respectively. The 1 : 1 derivative is the product of thermodynamic control when a molar ratio of ligand to yttrium salt of 1 : 1 is used. The new compounds have been characterised both as the solid (X-ray diffraction) and in solution (multinuclear magnetic resonance). In both yttrium complexes the ligand acts as a tridentate chelate. The arrangement of the two ligands in the 2 : 1 complex affords a pseudo-meso structure. Tridentate chelation of yttrium(III) in both complexes is retained in solution as evidenced by 89Y NMR data obtained via31P,89Y-HMQC, and 89Y,31P-DEPT experiments. The investigation of the solution behaviour of the Y(III) complexes through PGSE NMR diffusion measurements showed that average structures in agreement with the 1 : 1 and 1 : 2 stoichiometries are retained in acetonitrile.

URI:
http://hdl.handle.net/10651/5676
ISSN:
1477-9226
Identificador local:

20111431

DOI:
10.1039/c1dt10194c
Colecciones
  • Artículos [37532]
Ficheros en el ítem
Métricas
Compartir
Exportar a Mendeley
Estadísticas de uso
Estadísticas de uso
Metadatos
Mostrar el registro completo del ítem
Página principal Uniovi

Biblioteca

Contacto

Facebook Universidad de OviedoTwitter Universidad de Oviedo
El contenido del Repositorio, a menos que se indique lo contrario, está protegido con una licencia Creative Commons: Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Creative Commons Image