TITLE:
Synthesis, Growth, Crystal Structure and Characterization of the o-Toluidinium Picrate
AUTHORS:
Kandasamy Mohana Priyadarshini, Angannan Chandramohan, Thangarak Uma Devi
KEYWORDS:
Single Crystal; Organic Molecules; Solution Growth; X-Ray Diffraction; Characterization; Nonlinear Optical
JOURNAL NAME:
Journal of Crystallization Process and Technology,
Vol.3 No.4,
October
17,
2013
ABSTRACT:
A new organic charge transfer
molecular complex salt of o-toluidinium picrate (OTP) was synthesised and the
single crystals were grown by the slow solvent evaporation solution growth
technique using methanol as a solvent at room temperature. Formation of the new
crystal has been confirmed by single crystal X-ray diffraction (XRD) and NMR
spectroscopic techniques. The crystal structure determined by single crystal
X-ray diffraction indicates that both the cation and the anion are interlinked
to each other by three types of intermolecular hydrogen bonds, namely N(4)-H(4A)···O(7), N(4)-H(4B)···O(5) and N(4)-H(4C)···O(7). The title compound (OTP)
crystallizes in monoclinic crystal system with the centrosymmetric space group
P21/c. Fourier transform infrared (FT IR) spectral analysis was used
to confirm the presence of various functional groups in the grown crystal. The
optical properties were analyzed by the UV-Vis-NIR and fluorescence emission
studies.