56143-16-9Relevant academic research and scientific papers
Synthesis, structure, photophysical and electrochemical properties of Ru(TFA)(CO)(PPh3)2(L) (L=2-phenylpyridine, 2-p-tolylpyridine) and Ru(CO)(PPhMe2)2(L)(L′) (L= TFA, H) (L′= bipyridine, L′= 4,4′-dimethylbipyridine) relationships between ancillary ligand structure and luminescent properties
Pohkrel, Shyam,Decato, Dan,Rosenberg, Edward,Ross, J.B. Alexander,Terwilliger, Michelle
, p. 306 - 314 (2017)
The synthesis, structure and photophysical properties of the complexes [Ru[(CO)(TFA) (PPh3)2(L)][(L = ppy = 2-phenylpyridine, (1a); L = 2–(p–tolyl)pyridine] (1b), are reported. The complexes were characterized by UV-VIS, IR and NMR and by single-crystal X-ray diffraction techniques. We also report the synthesis, structure and photophysical properties of [Ru(CO)(L)(PPhMe2)2(L′)]+[PF6]? [L′ = bipyridine, L = TFA, (3a); L = H, (3b) and L = H, L′ = 4,4′-dimethlyl bipyridine (3c)]. These compounds were characterized by UV-VIS, IR and NMR techniques and by a single crystal X-ray diffraction in the case of 3a. The solid state structure of [Ru(Me2PhP)2(CO)2(TFA)2 (2) which is the starting material for the synthesis 3a-3c is also reported to verify the trans relationship of the less bulky PPhMe2 and for comparison with the previously reported PPh3 analogs. The purpose of this study was to determine the impact, if any, of replacing bpy with ppy in the case of 1a and alkylation of the benzene ring in the case of 1b on the photophysical and electrochemical properties compared to related Ru(bpy) complexes. In contrast to the bpy analogs 1a and 1b showed reversible 1e? oxidations and blue-shifted MLCT absorptions. In the case of 3a-3c we were interested in the effect on the photophysical properties of substituting PPh3 with the less bulky but more electron donating PPhMe2. There were only minor changes in the photophysical and electrochemical properties relative to the previously reported PPh3 analogs.
Tuning photophysical properties with ancillary ligands in Ru(II) mono-diimine complexes
Sharmin, Ayesha,Darlington, Reuben C.,Hardcastle, Kenneth I.,Ravera, Mauro,Rosenberg, Edward,Alexander Ross
, p. 988 - 1000 (2009/05/27)
The series of complexes [XRu(CO)(L-L)(L′)2][PF6] (X = H, TFA, Cl; L-L = 2,2′-bipyridyl, 1,10-phenanthroline, 5-amino-1,10-phenanthroline and 4,4′-dicarboxylic-2,2′-bipyridyl; L′2 = 2PPh3, Ph2PC2
Dehydrogenation of alcohols and hydrogenation of aldehydes using homogeneous ruthenium catalysts
Jung, Chu W.,Garrou, Philip E.
, p. 658 - 666 (2008/10/08)
A series of ruthenuim(II) diphosphine hydrides of the type RuH2(CO)(PPhs)(L-L) (I) where L-L = Ph2Ph(CH2)nPPh2 (n = 1-4), Ph2P(CH2)2AsPh2, and 1,2-(Ph2P)2C6H4 have been prepared and reacted with trifluoroacetic acid (HOAcF) to yield complexes Ru(OAcF)2CO(PPh3)m(L-L) where L-L = 1,2 (PPh2)2C6H4 (m = 0, 1), PPh2CH2CH2AsPh2 (m = 1), and (Ph2P)2(CH2)n (n = 3, 4; m = 0). These complexes have been extensively characterized by 1H, 31P, and 19F NMR spectroscopy and most of their streochemistries unambiguously determined. The catalytic activities and lifetimes of these new complexes in alcohol dehydrogenation and ketone hydrogenation were examined and compared to those of of Ru(OAcF)2CO(PPhy)2 (IIa).
