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 1-(p-n-alkyl phenyl) 3-(p-n-alkyloxyphenyl) propane 1,3-diones having alkyl chain lengths C₁₀, 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.