F¹⁹ Nuclear Magnetic Resonance of Various Metal–Fluoride Complexes in Aqueous Solution

Oxygen-17 nuclear magnetic resonance of inorganic compounds

“…The effects of low concentrations of paramagnetic ions on the line shape and position of the solvent water 170 resonance have been investigated by Shulman & Wyluda (1959) and Connick & Poulson (1959 has given a theoretical explanation for the observed diamagnetic shift of the solvent H 20 resonance in terms of charge transfer from the water to the paramagnetic Gd3+ ions. Jackson, Lemons & Taube (i960) have shown th at it is possible to distinguish the 170 resonance due to solvent water from that due to water in the first co-ordination sphere of certain metallic cations.…”

A reexamination of19F NMR in selected solids, the conductor Ag2F and Reference Insulators for studies of YBa2Cu3O7-type superconductors

“…Also shown in earlier work is the concentration dependence of 6 in these solutions. Only at very high concentrations, not used in the present work, a slight 6-decrease of about 2ppm is reported [12,24].…”

“…1 in [14]. m) [24] AgF in 1 molar aqueous solution; 6-shift converted from F2-to CeF6-scale. quasiisotropic.…”

Substitution by tridentate groups in platinum(II) complexes. II. Diethylenetriamine-tetrachloroplatinate(II) reaction

“…The quoted equilibrium constants were reported by Martin.5 Equations 1 and 2 combined with the PtCl42-+ H20 PtCl3(H20)-+ Cl-(K = 0.018 ) (1) PtCls(H20)-PtCls(OH)2-+ H+ (K -10-7 M) (2) dissociation constant for water allow the equilibrium constant for eq 3 to be estimated. Because excess chloride ion was always PtCU2-+ OH-PtClsCOH)2-+ Cl" (K « 106 M) (3) present in the reaction mixtures reported in Table I, the concentration of PtCl3(H20)was always much smaller than that of PtCl42-in the more acidic media. In the more basic solutions significant concentrations of PtCl3(OH)2~w ould be present in equilibrium mixtures.…”