31P NMR and IR characterization of enantioselective olefin and arene hydrogenation catalysts containing a rhodium–chiral phosphine complex tethered on silica

2003 ◽  
Vol 195 (1-2) ◽  
pp. 63-82 ◽  
Author(s):  
Keith J. Stanger ◽  
Jerzy W. Wiench ◽  
Marek Pruski ◽  
Robert J. Angelici
Keyword(s):  
31P Nmr ◽  
Hydrogenation Catalysts ◽  
Arene Hydrogenation ◽  
Phosphine Complex

Characterization of soil phosphorus in a fire-affected forest Cambisol by chemical extractions and 31P-NMR spectroscopy analysis

2010 ◽  
Vol 408 (16) ◽  
pp. 3342-3348 ◽  
Author(s):  
María-Belén Turrion ◽  
Francisco Lafuente ◽  
María-José Aroca ◽  
Olga López ◽  
Rafael Mulas ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
31P Nmr ◽  
Soil Phosphorus ◽  
31P Nmr Spectroscopy ◽  
Spectroscopy Analysis ◽  
Chemical Extractions

scholarly journals Nanoscale Ru(0) Particles: Arene Hydrogenation Catalysts in Imidazolium Ionic Liquids

2008 ◽  
Vol 47 (19) ◽  
pp. 8995-9001 ◽  
Author(s):  
Martin H. G. Prechtl ◽  
Morgana Scariot ◽  
Jackson D. Scholten ◽  
Giovanna Machado ◽  
Sérgio R. Teixeira ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Hydrogenation Catalysts ◽  
Imidazolium Ionic Liquids ◽  
Arene Hydrogenation

scholarly journals Synthesis and Spectroscopic Characterization of Two New Dawson Sandwich Complexes: Na18[(NaOH)2(VO)2(P2W15O56)2].40H2O and Na18[(NaOH)2(VO)2(As2W15O56)2].27H2O

2012 ◽  
Vol 9 (4) ◽  
pp. 2185-2190 ◽  
Author(s):  
Mohammad Hakimi ◽  
Mohammad Reza Mohammadi ◽  
Salma Behboupour
Keyword(s):  
Divalent Cation ◽  
31P Nmr ◽  
Spectroscopic Characterization ◽  
Sandwich Complexes ◽  
Sandwich Complex ◽  
Sodium Salts ◽  
Vis Spectroscopy ◽  
Sandwich Type ◽  
Anion Complexes

Reaction of the three vacant complex ofa-[P2W15O56]12-anda-[As2W15O56]12-with divalent cation of VO2+in 1:1 mole ratio yields a previously unknown sandwich-type Wells-Dawson complex; Na18[(NaOH)2(VO)2(P2W15O56)2].40H2O (represented as Na2(VO)2P4W30) and Na18[(NaOH)2(VO)2(As2W15O56)2].27H2O (represented as Na2(VO)2As4W30). These complexes contain anions in which two divalent VO2+cations with two Na+ions are symmetrically sandwiched between two α-[P2W15O56]12- or α-[As2W15O56]12-groups leading to a “lacunary” sandwich complex. The anion complexes are isolated as sodium salts and characterized by elemental analysis, TGA, IR, 31P NMR and UV-Vis spectroscopy.

scholarly journals Spectroscopic characterization of nanoErythrosomes in the absence and presence of conjugated polyethyleneglycols: an FTIR and 31P-NMR study

2002 ◽  
Vol 1564 (2) ◽  
pp. 317-324 ◽  
Author(s):  
Roxane Pouliot ◽  
Audrey Saint-Laurent ◽  
Camille Chypre ◽  
Ritchie Audet ◽  
Isabelle Vitté-Mony ◽  
...  
Keyword(s):  
31P Nmr ◽  
Spectroscopic Characterization ◽  
Nmr Study

Preparation and characterization of some ruthenium(II) porphyrins containing tertiary phosphine axial ligands, including the crystal structure of (octaethylporphinato)bis(triphenylphosphine)ruthenium(II)

1984 ◽  
Vol 62 (4) ◽  
pp. 755-762 ◽  
Author(s):  
Sara Ariel ◽  
David Dolphin ◽  
George Domazetis ◽  
Brian R. James ◽  
Tak W. Leung ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phosphine Ligands ◽  
Tertiary Phosphine ◽  
X Ray ◽  
Porphyrin Complex ◽  
H Nmr ◽  
Axial Ligands ◽  
Nmr Data ◽  
Phosphine Complex

The ruthenium(II) porphyrin complex Ru(OEP)(PPh3)2 (OEP = the dianion of octaethylporphyrin) has been prepared from Ru(OEP)(CO)EtOH, and the X-ray crystal structure determined; as expected, the six-coordinate ruthenium is situated in the porphyrin plane and has two axial phosphine ligands. Synthesized also from the carbonyl(ethanol) precursors were the corresponding tris(p-methoxyphenyl)phosphine complex, and the Ru(TPP)L2 (TPP = the dianion of tetraphenylporphyrin, L = PPh3, P(p-CH3OC6H4)3, P″Bu3) and Ru(TPP)(CO)PPh3 complexes. Optical and 1H nmr data are presented for the complexes in solution. In some cases dissociation of a phosphine ligand to generate five-coordinate species occurs and this has been studied quantitatively in toluene at 20 °C for the Ru(OEP)L2 and Ru(TPP)L2 systems.

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