Syntheses, characterization, and structures of three ruthenium complexes containing two monodentate dppm ligands

Abstract

Three cis-Ru(dppm)₂XY complexes (XY = C₂O₄, 1; X = Cl, Y = N₃, 2; X = Y = N₃, 3) were prepared by reactions of cis-Ru(dppm)₂Cl₂ with (NH₄)₂C₂O₄, a mixture of NaN₃ and NaPF₆, and only NaN₃, respectively, while 3 could also be obtained from further reaction of 2 with NaN₃ undergoing a facile chloride abstraction. All complexes have been characterized by IR, NMR, UV–vis, and luminescence spectroscopic analyses as well as X-ray diffraction studies. Of these structures, 1 shows oxalate coordinates to Ru as a chelating ligand, while 2 displays Ru and azide linear, and 3 gives two azide groups cis to each other, which are different from two substituting ligands commonly lying in trans positions in Ru(P–P)₂ complexes by using cis-Ru(dppm)₂Cl₂ as a precursor.

Graphical Abstract

Keywords:

• Ruthenium
• dppm
• Syntheses
• Structure

Acknowledgments

We thank the projects sponsored by SRF for ROCS, SEM and Ministry of Human Resources and Social Security, and the Natural Science Foundation of Zhejiang Province (LY13B020004) for financial support.