No evidence for proton transfer along the N-H...O hydrogen bond in N-methylacetamide: neutron single crystal structure at 250 and 276 K

Article Abstract:

Single-crystal neutron diffraction method is used to investigate the crystal structure of N-methylacetamide at two temperature, 250 and 276 K. Result reported no evidence for proton transfer along the N-H...O hydrogen bond at either temperatures, but a short intramolecular contacts between the amide hydrogen atom and those on both neighboring methyls is found, which may affect the vibrational properties of the respective molecular groups.

Analysis, Crystals, Crystal structure, Hydrogen bonding, Chemical properties, Methyl groups, Methyl group

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Dynamics of crystalline N-methylacetamide: temperature dependence of infrared and inelastic neutron scattering spectra

Article Abstract:

A study was conducted to analyze the properties of crystalline N-methylacetamide (NMA). The spectra of the isotopic derivatives of NMA were obtained at six temperatures in the range 20-150 K using a filter difference spectrometer. Experimental results indicated that the temperature dependence of the intensities of the librations of the methyl groups in NMA supported no indication for a possible methyl-methyl coupling.

Neutrons, Crystallization

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Infrared and inelastic neutron scattering study of the 1.03- and 0.95-nm kaolinite- hydrazine intercalation complexes

Article Abstract:

The interaction of hydrazine with kaoline was studied using a combination of infrared (IR) spectroscopy, inelastic neutron scattering (INS), and X-ray powder diffraction. The combined application of crystallographic methods has provided new insights into the structure and bonding of the KH intercalation complex.

Electric properties, Infrared spectroscopy, Hydrazine, Hydrazine (Compound)

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