New polymorphic phase of arachidic acid crystal: structure, intermolecular interactions, low-temperature stability and Raman spectroscopy combined with DFT calculations.

ABSTRACT: Saturated monocarboxylic fatty acids with long carbon chains are organic compounds widely used in several applied fields, such as energy production, thermal energy storage, antibactericidal, antimicrobial, among others. In this research, a new polymorphic phase of arachidic acid (AA) crystal was synthesized and its structural and vibrational properties were studied by single-crystal X-ray diffraction (XRD) and polarized Raman scattering. The new structure of AA was solved at two different temperature conditions (100 and 300 K). XRD analysis indicated that this polymorph belongs to the monoclinic space group P2₁/c (C_2h⁵), with four molecules per unit cell (Z = 4). All molecules in the crystal lattice adopt a gauche configur

SUBMITTER: Cardoso LMB 

PROVIDER: S-EPMC10660439 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature