ChemInform Abstract: Preparation and Spectroscopic Characterization of Difluorophosphorane, PH3F2. 31P NMR Spectrum of Protonated Diphosphine, P2H+ 5.

ChemInform ◽  
1990 ◽  
Vol 21 (8) ◽  
Author(s):  
R. MINKWITZ ◽  
A. LIEDTKE
Keyword(s):  
31P Nmr ◽  
Spectroscopic Characterization ◽  
Nmr Spectrum

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

Infrared, 57Fe Mössbauer, and 31P NMR Spectroscopic Characterization of Fe(CO)4L (L = Phosphine and Phosphite)

1987 ◽  
Vol 42 (5) ◽  
pp. 573-578 ◽  
Author(s):  
Hidenari Inoue ◽  
Takashi Nakagome ◽  
Takeshi Kuroiwa ◽  
Tsuneo Shirai ◽  
Ekkehard Fluck
Keyword(s):  
31P Nmr ◽  
Chemical Shifts ◽  
Spectroscopic Characterization ◽  
Negative Slope ◽  
Positive Slope ◽  
Carbonyl Ligands ◽  
Trigonal Bipyramidal ◽  
Back Donation ◽  
Donor Capability

A series of trigonal bipyramidal Fe(CO)4L complexes has been prepared and characterized by infrared, 57Fe Mössbauer and 31P NMR spectroscopy. A linear correlation, with a negative slope, between the CO stretching frequencies and the isomer shifts demonstrates that the triple bond nature of the carbonyl ligands is strengthened with increasing iron-to-phosphorus back donation. The linear dependence of the quadrupole splittings on the isomer shifts with a positive slope has revealed that the σ-donor capability of the phosphine or phosphite ligand is offset by the π-acceptor capability. The formation of Fe(CO)4L complexes from the corresponding free ligands is accompanied by a downfield shift of 31P NMR chemical shifts. The coordination shifts are linearly correlated with the Mössbauer isomer shifts.

Characterization of the 31P NMR spectrum of Manduca sexta and effects of antimetabolites

1989 ◽  
Vol 19 (3) ◽  
pp. 323-326 ◽  
Author(s):  
S.N. Thompson ◽  
R.W-K. Lee ◽  
N.E. Beckage
Keyword(s):  
Manduca Sexta ◽  
31P Nmr ◽  
Nmr Spectrum

Darstellung und spektroskopische Charakterisierung von (η3-Hexahydro-closo-hexaborato)phenylquecksilber(1-) [Hg(η3-B6H6)Ph] sowie Kristallstruktur von [PPh4][Hg(η3-B6H6)Ph] / Preparation and Spectroscopic Characterization of (η3-Hexahydro-closo-hexaborato)phenylmercury(1 -) [Hg(η3-B6H6)Ph]- and Crystal Structure of [PPh4][Hg(η3-B6H6)Ph]

1997 ◽  
Vol 52 (1) ◽  
pp. 57-60 ◽  
Author(s):  
T. Schaper ◽  
W. Preetz
Keyword(s):  
Crystal Structure ◽  
Diffraction Analysis ◽  
Spectroscopic Characterization ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Lower Field ◽  
Nmr Spectrum ◽  
X Ray ◽  
Ir And Raman

By reaction of [B6H7]- with PhHg(CH3COO) in dichloromethane [Hg(η3-B6H6)Ph]- is formed. The crystal structure of [PPh4][Hg(η3-B6H6)Ph] has been determined by single crystal X-ray diffraction analysis; monoclinic space group P 21/c with a = 9.567(5) Å, b = 22.213(5) Å, c = 14.296(5) Å, β = 94.484(5)°. The 11B NMR spectrum exhibits a doublet at -9.9 ppm shifted to lower field as compared with [B6H7]- and the 199Hg NMR spectrum a singlet at -74.5 ppm. In the IR and Raman spectra characteristic B-H vibrations are observed

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