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

Treatment of cis-$[$RuCl${}_2$(phen)${}_2$$]$ $\cdot$ 2H${}_2$O (phen=1,- 10-phenanthroline) with 1-(2,6-diisopropylphenoxy)-4-phenylphthalazine (HL1) or 1-(2,6-dimethylphenoxy)-4-phenylphthalazine (HL2) in the presence of AgPF${}_6$ afforded two cyclometalated ruthenium(II) complexes, $[$Ru(${\kappa }^2$-C,N-L1)(phen)${}_2$$]$(PF${}_6$) (1) and $[$Ru(${\kappa }^2$-C,N-L2)(phen)${}_2$$]$(PF${}_6$) (2), respectively. The two complexes have been characterized by UV-vis and luminescence spectroscopy. The structure of 1 $\cdot$ 1.5H${}_2$O has been determined by single-crystal X-ray diffraction.