Search
Now showing items 1-10 of 30
Far infrared and nuclear magnetic resonance spectra of molecules with internal rotor groups
(1965)
The torsional frequencies for 1,2-butadiene, methyl phosphine and 1-chIoro-1, 1-difIuoroethane were observed in the far infrared at 153.9, 207 and 246 cm⁻¹ respectively. The corresponding barriers to internal rotation were ...
Correlations between structure and nuclear magnetic resonance (N.M.R.) spectra for aliphatic esters
(1965)
The n.m.r. chemical shift for 18 acetate esters, CH₃COOR', and 16 methyl esters, RCOOCH₃, have been measured neat and in carbon tetrachloride solution. The n.m.r. chemical shifts of acetate esters, CH₃COOR', are controlled ...
The determination of trace levels of oxygen and carbon by charged particle activation analysis
(1969)
Research and development in ultrapure materials require analytical methods with sensitivities in the part per million to part per billion range for many of the light elements. Current analytical methods are of limited ...
A study of some haloferrate complexes and a potentiometric equilibrium study of the ferric chloride system
(1965)
Several chloroferrate(III) and bromoferrate(III) salts of aliphatic and aromatic amines have been prepared and isolated. The chemical compositions, based on iron and chloride analyses, have been compared with theoretical ...
Physical properties of some binuclear copper (II) complexes
(1969)
The copper(II) complexes of citric acid and N,N'-diglycylethyl-enediamine have been studied in aqueous solutions in the pH range 2 to 10 electron spin resonance, nuclear magnetic resonance, optical spectrophotometry, and ...
Diffusion coefficients of some transition metal complexes
(1969)
The polarographic and chronopotentiometric techniques were used to determine the diffusion coefficients of some mono- and polynuclear complexes of transition metal ions using the Ilkovic and Sand equations with electrochemical ...
The preparation of some aminoalkylphosphonic acids and related compounds
(1969)
Six phosphonocarboxylate esters were prepared. The esters synthesized were: [line break] triethyl phosphonoacetate [line break] diisopropyl methyl phosphonoacetate [line break] triethyl 4-methyl-2-phosphonopentanoate [line ...
Infrared studies and vibrational analyses of simple acyclic esters
(1967)
A series of simple saturated and unsaturated esters have been investigated at these spectroscopic laboratories. In the infrared, these esters were examined as vapors from 400-50 cm⁻¹. Liquid samples were studied by the ...