Preparation of P,N-Heterodifunctional Ferrocene-Coordinating Ligands by Selective Functionalization of Polyphosphanes by the Staudinger Reaction - Crystal and Molecular Structure of a New Cyclometallaphosphoraniminophosphane of Palladium(II)

• Published in: European journal of inorganic chemistry Vol. 1998; no. 9; pp. 1359 - 1368
• Main Authors: Molina, Pedro, Arques, Antonio, García, Alejandro, Ramírez de Arellano, M. Carmen
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag GmbH 01.09.1998; WILEY‐VCH Verlag GmbH; Wiley
• Subjects: Chemistry; Chemistry, Inorganic & Nuclear; Iminophosphoranes; N-Difunctional ligands; P,N‐Difunctional ligands; Palladium; Physical Sciences; Polyphosphanes; Science & Technology; β-Ferrocenylvinyl azide; PHOSPHINE; NUCLEAR-MAGNETIC-RESONANCE; RHODIUM(I) COMPLEXES; X-RAY STRUCTURE; PLATINUM COMPLEXES; beta-ferrocenylvinyl azide; METAL-CARBONYL COMPLEXES; P,N-difunctional ligands; palladium; iminophosphoranes; ASYMMETRIC HYDROGENATION; polyphosphanes; NITROGEN LIGANDS; CATALYSTS; 2-<BIS(DIPHENYLPHOSPHINO)METHYL>PYRIDINE PNP LIGANDS
• ISSN: 1434-1948; 1099-0682
• DOI: 10.1002/(SICI)1099-0682(199809)1998:9<1359::AID-EJIC1359>3.0.CO;2-C

Staudinger reactions of the β‐ferrocenylvinyl azide 1 with several diphosphanes in a 1:1 molar ratio afford the monoiminophosphorane derivatives 2–4, whereas with a 2:1 stoichiometry these reactions afford the bis(iminophosphoranes) 5–7. Similar results are obtained for the reactions of 1 with tris(diphenylphosphanylmethyl)ethane (triphos) and tris[2‐(diphenylphosphanyl)ethyl]phosphane (tetraphos). Reaction of these P,N‐difunctional ferrocene ligands with dichlorobis(benzonitrile)palladium(II) leads to the PdII‐metallacycle derivatives 13 and 14. The molecular structures of 5d and 13 have been established by X‐ray crystallography.