Syntheses and properties of cyclometalated ruthenium(II) complexes with 1,10-phenanthroline and phenylphthalazine ligands

Abstract

Treatment of cis-[RuCl2(phen)2]·2H2O (phen=1,- 10-phenanthroline) with 1-(2,6-diisopropylphenoxy)-4-phenylphthalazine (HL1) or 1-(2,6-dimethylphenoxy)-4-phenylphthalazine (HL2) in the presence of AgPF6 afforded two cyclometalated ruthenium(II) complexes, [Ru(κ2-C,N-L1)(phen)2](PF6) (1) and [Ru(κ2-C,N-L2)(phen)2](PF6) (2), respectively. The two complexes have been characterized by UV–vis and luminescence spectroscopy. The structure of 1·1.5H2O has been determined by single-crystal X-ray diffraction.

Cyclometalated and NNN Terpyridine Ruthenium Photocatalysts and Their Cytotoxic Activity

“…(2.114(3) Å ) and the Ru1-C7 (2.026(4) Å ) lengths are in line with those of tpy [64,65,66,67], and NC-cyclometalated [65,68,69] ruthenium complexes. The X-ray analysis shows the presence of additional intramolecular π-π interactions between a phenyl group of dppb and the N-coordinated pyridine ring, in agreement with the behavior of 1 in solution with one phenyl displaying an upfield 1 H NMR signal (δH 5.93).…”

“…The distortions arise from the small O1-Ru-O2 angle of the acetate (58.52(8) • ), with similar Ru-O bond distances of 2.256(3) and 2.231(2) Å, not affected by the different trans P and C ligands. The Ru1-N1 (2.114(3) Å) and the Ru1-C7 (2.026(4) Å) lengths are in line with those of tpy [64][65][66][67], and NC-cyclometalated [65,68,69] ruthenium complexes. The X-ray analysis shows the presence of additional intramolecular π-π interactions between a phenyl group of dppb and the Ncoordinated pyridine ring, in agreement with the behavior of 1 in solution with one phenyl displaying an upfield 1 H NMR signal (δ H 5.93).…”