Photosubstitution in tris chelate complexes of ruthenium(II) containing the ligands 2,2'-bipyrazine, 2,2'-bipyrimidine, 2,2'-bipyridine, and 4,4'-dimethyl-2,2'-bipyridine: energy gap control

摘要: Photosubstitution was studied for a series of ruthenium(II) complexes containing the ligands 2,2{prime}-bipyridine (bpy), 2,2{prime}-bipyrimidine (bpm), 2,2{prime}-bipyrazine (bpz), 4,4{prime}-dimethyl-2,2{prime}-bipyridine ((CH{sub 3}){sub 2}bpy), pyridine (py), CH{sub 3}CN, and Cl{sup {minus}}. For study, number new were synthesized that include (Ru(bpz){sub 2}(bpm)){sup 2+}, (Ru((CH{sub 2}bpy){sub 2}(py){sub 2}){sup (Ru(bpm){sub 2{minus}}(py){sub (Ru(bpz)(bpy)(py){sub 2}(bpz)){sup (Ru(bpz)(bpm)(bpy)){sup 2}(CH{sub 3}CN)Cl){sup +}, Ru(bpm){sub 2}Cl{sub 2} their absorption, emission, electrochemical properties determined. 48 refs., 6 figs., 3 tabs.