Ru(II)(NH3)5NCCH2PyH3+錯合物在0.1 M HCl酸性條件下, 以過氧二 硫酸鈉氧化後,溶液逐漸成變成綠色, 且當以2當量氧化時, 溶液顏色達到 最深, 紫外-可見光譜由232 nm 變成791 nm. 紅外線光譜顯示氧化產物 金屬中心仍為Ru(II)電子組態, 而核磁共振光譜及電化學結果進一步支持 氧化產物為[Ru(II)(NH3)5NCC(PyH)=C(PyH)CNRu(II)(NH3)5]6+ 雙核錯合 物, 環路伏安圖顯示有兩組可逆氧化還原波, 分別在E1/2=0.70, 0.95 V (vs NHE).Ru(II)(NH3)5NCCH2PyH3+錯合物氧化反應速率在[H+ ]=0.01-0.20 M 範圍隨著溶液酸性增加而遞減. The Ru(II)(NH3)5NCCH2PyH3+ complex exhibits a metal to ligand charge transfer absorption at 232 nm. When the complex was oxidized with persulfate ion, it took two equivalents of the oxidant and the solution turned greenishblue with absorption at 791 nm. Both IR and NMR spectra indicate that the metal center of the complex after oxidation remains in Ru(II) oxidation state. The NMR results (1H and 13C) further suggest that the oxidation product is[Ru(II)(NH3)5NCC(PyH)=C(PyH)CNRu(II)(NH3)5 ]6+ binuclear complex. The electro-chemical result supports the NMR observation. The cyclic voltammogram of the oxidized product solution shows two sets of the one electron reversible waves at E1/2=0.70 and 0.95 V (vs NHE), respectively. The kinetics of the oxidation of Ru(II)(NH3)5NCCH2PyH3+ complex at [H+]=0.01-0.2 M were measured, and the rate of the oxidation decreases as the concentration of acid increase.
