Taqui Khan, M. M. ; Nazeeruddin, MD. K. (1988) Synthesis and characterization of Ru(II) and Ru(III) complexes of diphenylphosphinoacetic acid and their interaction with small molecules Inorganica Chimica Acta, 147 (1). pp. 33-43. ISSN 0020-1693
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0020-1693(00)80626-X
Abstract
Complexes of Ru(II) and Ru(III) with the bidentate ligand diphenylphosphinoacetic acid (POH) are reported. The ligand POH reacts with RuCl2(PPh3)3 in a 1:3 ratio to give a five-coordinate complex of composition Ru(PO)2(POH) with complete displacement of PPh3. In a 1:2 ratio however the complex Ru(PO)2(PPh3) is formed. The reaction of POH with RuCl2(DMSO)4 in a 2:1 ratio afforded a yellow complex of composition HRu(PO)2Cl(DMSO). In a 3:1 ratio of POH to RuCl2(DMSO)4 however, the complex HRu(PO)3 was obtained. Neutral complexes of the composition Ru(PO)2Cl(AsPh3) and Ru(PO)3 were obtained by the reaction of RuCl3(AsPh3)2·MeOH with POH in 1:2 and 1:3 mole ratios in acetone solution, respectively. A dimeric chloro bridged complex of composition [Ru(PO)2Cl]2 was obtained on reaction of RuCl33H2O with POH in methanol. The complexes have been characterized on the basis of elemental analysis 1H, 13C{1H} and 31P{1H} NMR, EPR and electrochemical studies. The square pyramidal complexes 1 and 2 undergo facile addition reactions with CO, H2, PPh3 and DMSO to form octahedral species. The redox potentials RuIII/RuII of the complexes become more positive with an increase in the π-acidity of the ligand coordinated to the metal ion.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 58489 |
| Deposited On: | 31 Aug 2011 12:15 |
| Last Modified: | 31 Aug 2011 12:15 |
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