Determination of the Temperature Dependence of the H−D Spin−Spin Coupling Constant and the Isotope Effect on the Proton Chemical Shift for the Compressed Dihydride Complex [Cp*Ir(P−P)H2]2+

2005 ◽  
Vol 127 (15) ◽  
pp. 5632-5640 ◽  
Author(s):  
Ricard Gelabert ◽  
Miquel Moreno ◽  
José M. Lluch ◽  
Agustí Lledós ◽  
D. Michael Heinekey
Keyword(s):  
Chemical Shift ◽  
Temperature Dependence ◽  
Isotope Effect ◽  
Spin Coupling ◽  
Proton Chemical Shift ◽  
Coupling Constant ◽  
Spin Coupling Constant ◽  
Spin Spin Coupling

scholarly journals Stereochemical Determination of Five-Membered Cyclic Ether Acetogenins Using a Spin-Spin Coupling Constant Approach and DFT Calculations

Marine Drugs ◽  
2014 ◽  
Vol 12 (7) ◽  
pp. 4031-4044 ◽  
Author(s):  
Adrián Gutiérrez-Cepeda ◽  
Antonio Daranas ◽  
José Fernández ◽  
Manuel Norte ◽  
María Souto
Keyword(s):  
Dft Calculations ◽  
Cyclic Ether ◽  
Spin Coupling ◽  
Coupling Constant ◽  
Spin Coupling Constant ◽  
Spin Spin Coupling

Proton magnetic resonance and Raman spectroscopic studies of methylmercury (II) complexes of inorganic anions

1976 ◽  
Vol 54 (16) ◽  
pp. 2517-2525 ◽  
Author(s):  
Dallas L. Rabenstein ◽  
M. Coreen Tourangeau ◽  
Christopher A. Evans
Keyword(s):  
Magnetic Resonance ◽  
Chemical Shift ◽  
Proton Magnetic Resonance ◽  
Formation Constants ◽  
Spin Coupling ◽  
Donor Atom ◽  
Coupling Constant ◽  
Spin Coupling Constant ◽  
Raman Spectral Data ◽  
Spin Spin Coupling

Complexation of methylmercury(II) by sulfate, selenate, carbonate, sulfite, selenite, thiocyanate, selenocyanate, sulfide, and selenide in aqueous solution has been studied by proton magnetic resonance and Raman spectroscopy. Formation constants were determined for the SO42−, SeO42−, CO32−, SO32−, SeO32−, SeO3H−, SCN−, and SeCN− complexes from the pH dependence of the chemical shift and the 199Hg−1H spin–spin coupling constant of the methyl group of CH3Hg(II) in solutions containing both CH3Hg(II) and ligand. The chemical shift and the 199Hg–1H spin–spin coupling constant of the CH3Hg(II) in each of the complexes were also obtained from the same measurements. Proton magnetic resonance parameters were measured for several complexes with sulfide and selenide. The ligand donor atom in each of the complexes was identified using the formation constants, the 199Hg–1H spin–spin coupling constant of the complexed methylmercury and the Raman spectral data. It is of particular interest that, in the selenite complex, the methylmercury is bonded to an oxygen atom whereas sulfur is the donor atom in the sulfite complex.

Sign in / Sign up

Export Citation Format

Share Document