Multidentate Phosphanyl Phosphinines: Synthesis and Properties

Xiaodan Chen; Zhongshu Li; Hansjörg Grützmacher

doi:10.1002/chem.201801225

Multidentate Phosphanyl Phosphinines: Synthesis and Properties

Chemistry. 2018 Jun 12;24(33):8432-8437. doi: 10.1002/chem.201801225. Epub 2018 May 15.

Authors

Xiaodan Chen¹, Zhongshu Li², Hansjörg Grützmacher^{2

3}

Affiliations

¹ College of Chemistry and Materials Science, Jinan University, 510632, Guangzhou, P.R. China.
² Lehn Institute of Functional Materials (LIFM), School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P.R. China.
³ Department of Chemistry and Applied Biosciences, ETH Zurich, 8093, Zurich, Switzerland.

PMID: 29644747
DOI: 10.1002/chem.201801225

Abstract

With respect to the well-developed chemistry of pyridines, that of phosphinines is in its infancy. There are still challenges to be overcome with respect to the development of simple syntheses and the application of phosphinine derivatives. Here, we show that sodium phosphinin-2-olate is a valuable building block to prepare multidentate phosphinine ligands, which in turn can be employed for the preparation of metal complexes. These Pd^II and Rh^I complexes were fully characterized, including by NMR spectra and single-crystal X-ray diffraction studies, which clearly demonstrate that molecules R_3-x P(O-phosphinine)_x with one, two, and three phosphinines (x=1, 2, 3) can be tethered to a central phosphorus donor center to give bis-, tris-, and tetradentate ligands.

Keywords: complexation; heterocycles; ligands; phosphinines; phosphorus.