FT-IR and FT-Raman spectroscopic studies of 1-(p-n-alkyl phenyl) 3-(p-n-alkyloxyphenyl) propane 1,3-diones

Abstract

FT-IR and FT-Raman spectroscopic studies of the mesogens with the general molecular formula I-(p-n-alkyl phenyl) 3-(p-n-alkyloxyphenyl) propane 1,3-diones having alkyl chain lengths Cl0, C11 and C12 are carried out. An analysis of the vibrational spectra of C10, C11 and C12 at room temperature strongly suggests that while C12 probably belongs to a highly ordered monoclinic or orthorhombic type of lattice, C10 and C11 belong to a hexagonal or triclinic unit cell, having lesser degree of lattice order.