99573-03-2Relevant academic research and scientific papers
New terdentate ligands containing nitrogen and phosphorus or arsenic as donor atoms and their complexes with ruthenium(II) and -(III)
Khan, M. M. Taqui,Reddy, V. Vijay Sen
, p. 208 - 214 (2008/10/08)
The terdentate ligands bis(2-(diphenylphosphino)ethyl)benzylamine (DPBA) and bis(2-(diphenylarsino)ethyl)benzylamme (DABA) were synthesized and characterized on the basis of their mass spectra and 1H, 31P, and 13C NMR spectra. Some of the complexes of these ligands (L) with ruthenium(II) and rutheniurn(III) were prepared by employing various starting materials. The reaction of RuCl2(PPh3)3 with a twofold excess of L in acetone or n-hexane gave the neutral complex [RuCl2(PPh3)(L)] (L = DPBA or DABA). The reaction of DPBA with RuCl2(PPh3)3 in methanol, however, gave the cationic complex [RuCl(DPBA)2]Cl. Neutral monomeric complexes of the type [RuCl3(L)] were obtained by the reaction of L with RuCl3(AsPh3)2MeOH, in acetone. The cationic complex [RuCl(DPBA)2]Cl2 was obtained by the reaction of RuCl3(AsPh3)2MeOH with DPBA in methanol. Similar reactions with RuBr3(AsPh3)2MeOH in acetone yielded [RuBr2(AsPh3)(L)]Br (L = DPBA or DABA) and [RuBr3(DABA)]. The reaction of RuCl2(Me2SO)4 with DPBA and DABA in acetone gave the complexes [RuCl(Me2SO)2(DPBA)]Cl and [RuCl2(Me2SO)(DABA)], respectively. The reaction of RuCl3·3H2O with a twofold excess of DPBA and NH4PF6 in methanol gave the Ru(II) cationic species [Ru(DPBA)2] (PF6)2 whereas DABA yielded the ruthenium(III) cationic complex [RuCl-(DABA)2]Cl2. The results of 1H and 31P NMR, EPR, and other spectral data of the complexes are discussed.
