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Correlation of Infrared Stretching Frequencies and Hydrogen Bond Distances in Crystals
Empirical correlations between X–H≡Y distance R and frequency shift of the X–H stretching motion Δv are presented for O–H≡O, N–H≡O, and N–H≡N hydrogen bonds. A linear correlation is possible providedExpand
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NMR Spectrum of 3‐Chlorothietane, an Example of Complete NMR Spectral Analysis by Computer Techniques
The NMR spectrum of 3‐chlorothietane has been analyzed by the use of three computer techniques. These are (1) spectral decomposition (DECOMP), (2) spectral assignment (ASSIGN), and (3) Swalen andExpand
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NMR Fluorine‐Fluorine Coupling Constants in Saturated Organic Compounds
The spectra of several fluorine‐substituted, saturated, organic compounds have been investigated. It has been found that the coupling constants between 1,2 fluorine atoms are usually near zero. TheExpand
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Computer facilities for the laboratory
A computer system which simulates the independence of small dedicated computers, but which is also capable of performing medium- to large-scale computations when they are required, is most desirable. Expand
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Temperature-Dependent Chemical Shifts in the NMR Spectra of Gases
It is found that the chemical shifts of various gaseous compounds, using gaseous methane as a standard, vary with temperature. The slopes of chemical shift versus temperature at 50°C are tabulatedExpand
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NMR Determinations of Barriers to Internal Rotation in Halogen‐Substituted Ethanes
The theory of Kaplan and Alexander for exchange in nuclear magnetic resonance (NMR) systems has been applied to exchange between three species with any number of nuclei of spin ½, in which all theExpand
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Potential Energy as a Function of Internal Rotation in CFClBr–CFClBr by NMR Measurements
The NMR spectrum of CFClBr–CFClBr is reported as a function of temperature from 177° to 300°K. The high‐temperature spectrum is analyzed in terms of a superposition of the spectra of the meso and dlExpand
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Nuclear Magnetic Resonance Fluorine—Fluorine Coupling Constants
The pattern of fluorine—fluorine coupling constants is explained on the basis of two mechanisms for nuclear spin—spin coupling: the ``through‐bond'' and the ``through‐space'' mechanisms. In theExpand
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