Synthesis, characterization and electrochemical studies of a series of polypyridyl ruthenium complexes | ||
| شیمى کاربردى روز | ||
| Article 2, Volume 1, Issue 1, January 2007, Pages 17-28 PDF (548.25 K) | ||
| Document Type: Original Article | ||
| DOI: 10.22075/chem.2006.3627 | ||
| Authors | ||
| Mahdi Behzad* 1; davar M. baghaee2 | ||
| 1School of Chemistry, Semnan University, Semnan, Iran | ||
| 2School of Chemistry, Sharif University of Technology, Tehran, Iran | ||
| Receive Date: 05 February 2019, Accept Date: 05 February 2019 | ||
| Abstract | ||
| In this study, two polypyridyl ruthenium complexes with the formula [Ru(Tttp)(opda-H2)Cl]PF6 (Fig. 2) and [Ru(Tttp)(en)(H2O)](PF6)2.3/2CH3CN (Fig. 3) were synthesized and characterized by conventional techniques such as 1HNMR, 13CNMR, UV-Vis, IR, mass spectrometry as well as elemental analysis. In these complexes, Tttp is 4'-p-toluyl-2:2':6':2"-terpyridine (Fig. 1), and opda is ortho-phenylenediamine. The 1HNMR studies showed that in the [Ru(Tttp)(opda-H2)Cl]PF6 complex, ortho-phenylenediamine was coordinated by loss of two hydrogen atoms in one of the two bqdi or s-bqdi forms (Fig. 5) . Electrochemical studies of this complex showed that in the potential region 1.55 Volts relative to NHE, there is an oxidation process that is related to one of the processes RuII(bqdi)/RuIII(bqdi) or RuIII(s-bqdi)/RuIV(s-bqdi). Similarly, in 0.924 V, there is another redox process relative to NHE that relates to one of the processes RuII(bqdi)/ RuII(s-bqdi) or RuIII(s-bqdi)/RuII(s- bqdi). In the case of the complex [Ru(Tttp)(en)(H2O)](PF6)2.3/2CH3CN, studies showed that H2O was coordinated instead of Cl. In addition, electrochemical studies also showed a quasi-reversible redox process at 1.66 V vs. NHE which could be attributed to the RuII / RuIV(O) pair. | ||
| Keywords | ||
| Polypyridyl; electrochemistry; Ruthenium | ||
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