Speaker
Dr
Rim Benali-Cherif
(LASPI2A)
Description
Two polymorphs of l-aspartic acid hydrochloride, C4H8NO4+Cl-, were obtained from the same aqueous solution.Their crystal structures have been determined from singlecrystal data collected at 100 K. The crystal structures revealed
three- and two-dimensional hydrogen-bonding networks forthe triclinic and orthorhombic polymorphs, respectively. The cations and anions are connected to one another via N—H...Cl and O—H...Cl interactions and form alternating
cation–anion layer-like structures. The two polymorphs share common structural features; however, the conformations of the l-aspartate cations and the crystal packings are different. Furthermore, the molecular packing of the orthorhombic polymorph contains more interesting interactions which seems
to be a favourable factor for more efficient charge transfer within the crystal.
Primary author
Dr
Rim Benali-Cherif
(LASPI2A)
Co-authors
Prof.
Nourredine Benali-Cherif
(Académie Algérienne des sciences)
Dr
Radhwane Takouachet
(LASPI2A)