Synthesis, crystal growth, structural, thermal and optical properties of naphthalene picrate an organic NLO material
Crystalline substance of naphthalene picrate (NP) was synthesized and single crystals were grown using slow evaporation solution growth technique. The solubility of the naphthalene picrate complex was estimated using different solvents such as chloroform and benzene. The material was characterized by elemental analysis, powder X-ray diffraction (XRD), nuclear magnetic resonance (NMR) and fourier transform-infrared (FT-IR) techniques. The electronic absorption was studied through UV-vis spectrophotometer. Thermal behavior and stability of the crystal were studied using thermogravimetric (TG) and differential thermal analysis (DTA) techniques. The second harmonic generation (SHG) of the material was confirmed using Nd:YAG laser.
A Computerised Least Square Method for Determination of Stability Constants of 1:1 Molecular Complexes and Chemical Shift of Pure Complexes from Nuclear Magnetic Resonance Data
A computerised method utilising nuclear magnetic resonance data has been developed for the determination of stability constants of 1:1 molecular complexes.It is based on the principle of least squares in which the coefficients are adjusted under a constraint with the help of Lagrange's method of undetermined multipliers.The method utilises the complete expression for equilibrium constant and is mathematically rigorous, straightforward, non-iterative and requires very little computer time.
Seal, B. K.,Mukherjee, A. K.
p. 413 - 415
(2007/10/02)
Preparation and IR-Spectroscopic Study of Charge Transfer Complexes of Naphthalene Derivatives with Some Tri- and Di-Nitrobenzenes
The charge transfer complexes of naphthalene and some of its derivatives with some trinitro- and dinitrobenzenes are prepared and investigated by ir-spectroscopy.The shifts in the bands due to functional groups as well as the γCH bands of both donor and acceptor are found to be indicative for the type of bonding in the charge transfer complex. - Keywords: Charge transfer complexes, synthesis and IR-spectra
Hindawey, Ahmed M.,Issa, Yousry M.,Marghalani, Yousef A.,Issa, Raafat M.
p. 1143 - 1150
(2007/10/02)
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