title: Growth and characterization of an organic single crystal: 2-[2-(4-diethylamino-phenyl)-vinyl]-1-methyl-pyridinium iodide.
abstract: Optically transparent crystal of the organic salt DEASI (2-[2-(4-Diethylamino-phenyl)-vinyl]-1-methyl-pyridinium iodide) has been synthesized by using knoevenagel condensation reaction method. The synthesized material has been purified by successfully recrystallization process. Single crystals of DEASI have been grown by slow evaporation technique at room temperature. The solubility of the title material has been determined at different temperature in acetonitrile/methanol mixture. The cell parameters and crystallinity of the title crystal were determined by single crystal XRD. The powder diffraction was carried out to study the reflection plane of the grown crystal and diffraction peaks were indexed. The presence of different functional groups in the crystal was confirmed by Fourier transform infrared (FTIR) analysis. (1)H NMR spectrum was recorded to confirm the presence of hydrogen nuclei in the synthesized material. The optical property of the title crystal was studied by UV-Vis-NIR spectroscopic analysis. The melting point and thermal property of DEASI were studied using TGA/DSC technique. The Vicker's hardness (Hv) was carried out to know the category. The dielectric constant and dielectric loss of the compound decreases with an increase in frequencies. Chemical etching studies showed that the DEASI grows in the two dimensional growth mechanisms. The Kurtz-Perry powder second harmonic generation (SHG) test has done for title crystal.
authors.affiliation: Centre for Crystal Growth, School of Advanced Sciences, VIT University, Vellore 632 014, Tamil Nadu, India.
authors.forename: K
authors.initials: K
authors.lastname: Senthil
authors.affiliation: Centre for Crystal Growth, School of Advanced Sciences, VIT University, Vellore 632 014, Tamil Nadu, India. Electronic address: kalainathan@yahoo.com.
authors.forename: S
authors.initials: S
authors.lastname: Kalainathan
authors.affiliation: Centre for Crystal Growth, School of Advanced Sciences, VIT University, Vellore 632 014, Tamil Nadu, India.
authors.forename: A
authors.initials: A
authors.lastname: Ruban Kumar
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D002152:Calorimetry, Differential Scanning; D003460:Crystallization; D018360:Crystallography, X-Ray; D006244:Hardness; D007454:Iodides / Q000138:chemical synthesis / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D000432:Methanol / Q000737:chemistry; D008968:Molecular Conformation; D011208:Powders; D011726:Pyridinium Compounds / Q000737:chemistry*; D012031:Refractometry; D012995:Solubility; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D013818:Thermogravimetry
chemical_list: C000593267:2-(2-(4-diethylamino-phenyl)-vinyl)-1-methyl-pyridinium iodide; D000097:Acetonitriles; D007454:Iodides; D011208:Powders; D011726:Pyridinium Compounds; D012997:Solvents; D000432:Methanol; C032159:acetonitrile
keywords: Chemical synthesis; Crystal growth; FT-IR; Mechanical studies; Optical materials