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4321550 
Journal Article 
Coordination chemistry of the multi-funtionalized 3-(diphenylphosphino)-1-propylamine ligand with ruthenium(II) 
Borah, G; Boruah, D 
2012 
1 
Indian Journal of Chemistry. Section A
ISSN: 0376-4710
EISSN: 0975-0975 
51 
3 
444-452 
WOS:000301884000005 
The reaction of RuCl3(PPh3)(3) with two molar equivalents of a multi-functionalized ligand, 3-diphenylphosphino-1-propylitmine (DPPA) yields two mononuclear, low spin, diamagnetic, octahedral neutral complexes, [RuCl2(eta(2)-P,N-DPPA)(2)] (1) and [RuCl2(eta(2)-P,N-DPPA)(PPh3)(2)] (2). The complexes have been characterized by conductivity measurements, FTfR, UV-vis, and variable temperature P-31[H-1] NMR, ESI(+)MS, TGA-DTG and cyclic voltammetry. The ESI(+) mass spectrogram of (1) shows molecular ion peak at nilz 658[Mr](+) indicating mononuclear nature of the complex. No fluxional behavior is observed from the variable temperature (200-300 K) P-31{1H} NMR spectra. The complexes (1) and (2) upon treatment with CH3CN in 1:1 molar ratio in the presence Of NH4PF6 in dichloromethane solution afford the six-coordinate cationic complexes [RuCl(eta(2)-P,N-DPPA)(2)(CH3CN)](PF6) (3) arid [RuCl(eta(2)-P,N-DPPA)(CH3CN)(PPh3)(2)](PF6) (4), respectively. The complexes (3) and (4) have also been characterized by FTIR, ESI(+)MS, H-1 and 31P{H-1) NMR spectra at room temperature. The complexes (1) and (2) are found to have high catalytic activity towards the oxidation of aromatic alcohols with H2O2/NaOCl as oxidant. Maximum conversion of 95% can be achieved under mild reaction conditions. 
Coordination chemistry; Multi-functional ligands; Ruthenium; Aminophophines