title: Experimental (FT-IR, FT-Raman, 1H, 13C NMR) and theoretical study of alkali metal syringates.
abstract: In this work the influence of lithium, sodium, potassium, rubidium and cesium on the electronic system of the syringic acid (4-hydroxy-3,5-dimethoxybenzoic acid) was studied. This paper presents spectroscopic vibrations (FT-IR, FT-Raman) and NMR ((1)H and (13)C) study of the series of alkali metal syringates from lithium to cesium syringates. Characteristic shifts of band wavenumbers and changes in band intensities along the metal series were observed. Optimized geometrical structures of the studied compounds were calculated by the B3LYP method using the 6-311++G(**) basis set. Aromaticity indices, atomic charges, dipole moments and energies were also calculated. The theoretical wavenumbers and intensities of IR and NMR spectra were obtained. The calculated parameters were compared to experimental characteristics of studied compounds.
authors.affiliation: Division of Chemistry, Bialystok University of Technology, Zamenhofa 29, 15-435 Bialystok, Poland. r.swislocka@pb.edu.pl
authors.forename: Renata
authors.initials: R
authors.lastname: Świsłocka
mesh_terms: D002247:Carbon Isotopes; D005707:Gallic Acid / Q000031:analogs & derivatives* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008672:Metals, Alkali / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D014732:Vibration
chemical_list: D002247:Carbon Isotopes; D008672:Metals, Alkali; D005707:Gallic Acid; C001945:syringic acid