Syntheses and coordination chemistry of bis(4-pyridyl)- and mixed (4-pyridyl) (2-pyridyl)-phospholes

Christophe Lescop (1) , Loïc Toupet (2) , Régis Réau (1)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 IPR - Institut de Physique de Rennes

The syntheses, spectroscopic characterizations, and X-ray structures of two new N,P,N-ligands 1 and 2 are described. These ligands are based on a central 2,5-substituted phosphole ring and have, respectively, two 4-pyridyl moieties, or one 4-pyridyl moiety and one 2-pyridyl moiety as substituents. The coordination chemistry of these ligands has been investigated. A Au(I)-complex 5 bearing ligand 1 as a P-donor and a Pt(II) complex 6 featuring ligand 2 as a P,N-chelate were obtained. Complex 6 spontaneously evolves to complex 7 bearing a 2-phospholene ring. Spectroscopic characterizations for complexes 5-7 as well as the X-ray crystal structure of 7 are described.

Domaines: Chimie inorganique

Christophe Lescop, Loïc Toupet, Régis Réau. Syntheses and coordination chemistry of bis(4-pyridyl)- and mixed (4-pyridyl) (2-pyridyl)-phospholes. Heteroatom Chemistry, 2011, 22 (3-4), pp.339-347. ⟨10.1002/hc.20687⟩. ⟨hal-00875458⟩