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合成了3种双核钌配合物[Ru(bpy)2]2{[(PyCHN)-Ph-O-C6H4-]2R}(ClO4)4,bpy=2,2′-联吡啶,PyCHN=N-2-吡啶亚甲基,R=无(1),-C(CH3)2(2),-SO2(3)并进行了有关表征。电化学研究表明:配合物3的ΔE和Kc值最大,说明苯环和硫原子之间存在着较强的(p(π)-d)π相互作用,有助于获得较强的金属-金属相互作用。配合物1,2,3都有混合价,通过Hush方程可以得到Vab的值大概为320~420 cm-1。这些结果表明:Schiff碱作为桥配体对于调配金属-金属相互作用并将其作为分子导线起着特殊的作用。
Three kinds of binuclear ruthenium complexes [Ru (bpy) 2] 2 {[(PyCHN) -Ph-O-C6H4-] 2R} (ClO4) 4, bpy = 2,2’- 2-pyridylmethylene, R = no (1), -C (CH3) 2 (2), -SO2 (3) Electrochemical studies show that the largest ΔE and Kc values for complex 3 indicate that there is a strong (p (π) -d) π interaction between the benzene ring and the sulfur atom, which helps to obtain stronger metal-metal interaction. The complex 1, 2, and 3 have mixed valences. The value of Vab is about 320-420 cm-1 by Hush equation. These results indicate that the Schiff base acts as a bridge ligand that plays a special role in mobilizing metal-metal interactions and using them as molecular conductors.