Geometry and intermolecular structure ofN-methylformamide in the liquid phase as measured by neutron scattering
- 1 May 1992
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 76 (1) , 143-156
- https://doi.org/10.1080/00268979200101221
Abstract
Neutron diffraction measurements have been carried out on two samples of liquid N-methylformamide with different isotopic composition (DCONDCD3 and DCONHCD3). The experiments were performed under normal conditions up to a momentum transfer of 22·9 Å-1. Refined intramolecular structure parameters describing equally well both experiments have been obtained. The N-H distance in particular could be evaluated accurately using a modified contrast method. There is some evidence that the H … O intermolecular distance is detectable in spite of overlapping intramolecular distances and of an increased delocalization of the π electron system in the liquid phase with respect to the gas.Keywords
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