Complexes of carbohydrates with metal cations. VII. Lanthanide-induced shifts in the P.M.R. spectra of cyclitols

1976 ◽  
Vol 29 (6) ◽  
pp. 1223 ◽  
Author(s):  
SJ Angyal ◽  
D Greeves
Keyword(s):  
Aqueous Solution ◽  
Metal Cations ◽  
Lanthanide Ions ◽  
Contact Interactions ◽  
Lanthanide Induced Shifts ◽  
Related Compounds

Addition of lanthanide ions to epi-inositol and related compounds in aqueous solution causes shifts in their p.m.r. spectra which are interpreted as being due to diamagnetic, pseudocontact, and contactinteractions. The contact interactions show stereospecificity: they are greatest when the bonds connecting the protons to the cation form a planar zig-zag arrangement.

Complexes of carbohydrates with metal cations. VIII. Lanthanide-induced shifts in the P.M.R. spectra of some methyl glycosides and 1,6-anhydrohexoses

1976 ◽  
Vol 29 (6) ◽  
pp. 1231 ◽  
Author(s):  
SJ Angyal ◽  
D Greeves ◽  
L Littlemore ◽  
VA Pickles
Keyword(s):  
Aqueous Solutions ◽  
Metal Cations ◽  
Lanthanide Ions ◽  
Lanthanide Induced Shifts ◽  
Approximate Location

Addition of lanthanide ions to aqueous solutions of some methyl glycosides and 1,6-anhydrohexoses causes shifts of the signals in their p.m.r. spectra. The approximate location of the cation in the complexes was determined and an attempt was made to explain the shifts in terms of contact and pseudocontact interactions.

Coordination of Pyridine N-Oxides with Alkali and Alkaline-Earth Metal Cations in Aqueous Solution

2005 ◽  
Vol 75 (1) ◽  
pp. 121-124 ◽  
Author(s):  
A. V. Ryzhakov ◽  
V. P. Andreev
Keyword(s):  
Aqueous Solution ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Metal Cations ◽  
Alkaline Earth Metal

scholarly journals Corrosion inhibition effects of metal cations on SUS304 in 0.5 M Cl− aqueous solution

2018 ◽  
Vol 140 ◽  
pp. 8-17 ◽  
Author(s):  
Md. Saiful Islam ◽  
Kyohei Otani ◽  
Masatoshi Sakairi
Keyword(s):  
Aqueous Solution ◽  
Corrosion Inhibition ◽  
Metal Cations

A fluorescence study on the complexation of Sm(iii), Eu(iii) and Tb(iii) with tetraalkyldiglycolamides (TRDGA) in aqueous solution, in solid state, and in solvent extraction

2016 ◽  
Vol 45 (46) ◽  
pp. 18484-18493 ◽  
Author(s):  
Fei Kou ◽  
Suliang Yang ◽  
Hongjuan Qian ◽  
Lihua Zhang ◽  
Christine M. Beavers ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Solid State ◽  
Solvent Extraction ◽  
Lanthanide Ions ◽  
Tridentate Ligand ◽  
Fluorescence Study ◽  
Trivalent Lanthanide

Trivalent lanthanide ions form 1 : 1, 1 : 2, and 1 : 3 complexes with tridentate ligand TMDGA in 1 M H/NaNO3 and form 1 : 3 extracted complexes with DMDODGA during solvent extraction.

13C NMR and lanthanide-induced shifts in epoxides of Terpenes and related compounds

1986 ◽  
Vol 24 (8) ◽  
pp. 718-722 ◽  
Author(s):  
Hans-Jörg Schneider ◽  
Pawan K. Agrawal
Keyword(s):  
13C Nmr ◽  
Lanthanide Induced Shifts ◽  
Related Compounds

Ultraviolet Spectroscopic Determination of Five Lanthanide Elements without Prior Separation

1993 ◽  
Vol 47 (6) ◽  
pp. 764-772 ◽  
Author(s):  
Irvin M. Citron ◽  
Patrick M. Hanlon ◽  
Stephen Arthur
Keyword(s):  
Aqueous Solution ◽  
Quantitative Determination ◽  
Heavy Metal Ions ◽  
Lanthanide Ions ◽  
Ion Concentrations ◽  
Statistical Reliability ◽  
Modified Method ◽  
Lanthanide Elements ◽  
The Individual

This investigation has resulted in an analytical method for the quantitative determination of total lanthanide concentration in aqueous solution by absorbance at 240 nm in the ultraviolet followed by quantitative determination of individual lanthanide ion concentrations by the use of concentration-responsive absorption peaks in the 190–235 nm region. The 240-nm peak is present and is proportional to concentration regardless of the ligand employed to complex the lanthanides (including H2O). The individual lanthanide/ligand peaks in the 190–235 nm region were selected on the basis of their separation from one another, their linearity of absorbance vs. concentration, and their statistical reliability based on replicate sample analyses. Lanthanides involved in this investigation were La+3, Nd+3, Eu+3, Ho+3, and Yb+3. Ligands ultimately selected for complexation were citrate for La+3, Nd+3, and Ho+3, and DTPA for Eu+3, Ho+3, and Yb+3. When large amounts of heavy metal ions were present, a modified method was developed with citrate as the only complexing ligand for all five lanthanides. The method here developed permits the analyses of lanthanide ions in aqueous solution without prior separation and involves the use of comparatively inexpensive instrumentation (UV absorption spectrophotometer).

Adsorption of metal cations from aqueous solution onto tin oxide thin films

1987 ◽  
Vol 5 (4) ◽  
pp. 941-943 ◽  
Author(s):  
Michael J. Tarlov ◽  
John F. Evans
Keyword(s):  
Thin Films ◽  
Aqueous Solution ◽  
Tin Oxide ◽  
Metal Cations ◽  
Oxide Thin Films

Effect of Alkali Metal Cations on Silicate Structures in Aqueous Solution

1988 ◽  
pp. 222-235 ◽  
Author(s):  
A. V. McCormick ◽  
A. T. Bell ◽  
C. J. Radke
Keyword(s):  
Aqueous Solution ◽  
Alkali Metal ◽  
Metal Cations ◽  
Alkali Metal Cations

Reduction of Benzene and Related Compounds in Aqueous Solution and Undivided Cells

1981 ◽  
Vol 128 (2) ◽  
pp. 322-326 ◽  
Author(s):  
J. P. Coleman ◽  
J. H. Wagenknecht
Keyword(s):  
Aqueous Solution ◽  
Related Compounds
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