Synthesis, crystal growth, spectral, thermal and optical properties of acenaphthene picrate

Abstract

The crystalline material of acenaphthene picrate (ACP) was synthesized and the single crystals of the title compound grown by slow evaporation solution growth technique. The solubility of the complex compound was estimated using different solvents as chloroform, ethanol, (1:1) chloroform -acetone mixture. The material was characterized through elemental analysis; powder XRD, NMR and FTIR techniques. The various planes of reflection have been identified from the XRD powder pattern. The formation of the charge transfer complex was confirmed by UV-VIS spectroscopy. The thermal stability of the crystals was studied using TG/DTA analyses techniques. The second harmonic generation (SHG) of the material was confirmed by using Nd: YAG laser.

Study of picrate salts with amines

“…The formation of salts 1-4 was confirmed by elemental analysis, IR, NMR and crystallographic studies. The asymmetric and the symmetric stretching vibrations of -NO 2 group show bands at 1536 cm À1 and 1334 cm À1 , respectively [32,33]. The shift of the m as (NO 2 ) vibration to lower frequency (1581-1530 cm À1 ) in the spectrum of the salts (1-4) compared with the free picric acid (1607 cm À1 ) suggested the large electron density on the picric acid.…”

Growth, structure, spectral and optical properties of semiorganic crystal: Pyridine-1-ium-2-carboxylatehydrogenbromide

“…Solubility of the materials was estimated as a function of temperature in the range 31-50 °C by the gravimetric method using a constant temperature water bath with an accuracy of ±0.01 °C [14]. The picolinic acid(C 6 H 6 NO 2 ) and the hydrobromic acid (HBr) (both are AR grade purity)…”

Comparative Spectroscopic Studies on Pure, 10 and 50 mol% Glycine Mixed L-Valinium Picrate Crystals

“…The proton in the glycine and picric acid was assigned with the help of the available literature [17,18]. In 1 HNMRspectrum, the OH-proton of picric acid pf LVP, 10 GVP and 50 GVP are observed at δ = 8.75, 8.54 and 8.73 ppm respectively.…”