Local order in fully deuterated liquid acetic acid as studied by neutron scattering. Complementarity to X-ray results

Abstract A structural investigation of fully deuterated liquid acetic acid (AA d4 ) was performed at 298 K and atmospheric pressure by using neutron scattering. The recorded data are analyzed to yield the total structure factor S M ( q ), the molecular form factor F 1 ( q ), the distinct pair correlation function g L ( r ) and the second signature of H-bonding, i.e. the deuterium oxygen interaction. Neutron scattering data, as well as recent X-ray studies, clearly show that the local order of the liquid is largely described by the short-range crystal structure.