4-Methylbenzylammonium chloride hemihydrate (4MLBACH) single crystals were obtained by slowly evapo-rating the solvent. The characterization of the title crystal was ﬁrst carried out and reported in this article. The crystal system and space group of the title crystal are identiﬁed as monoclinic and $C$2/$c$, respectively. The lattice parameter values were also calculated. Using Fourier transform infrared spectroscopy the protonation of 4-methylbenzylamine by hydrochloric acid and the formation of the crystal 4MLBACH were conﬁrmed. The transmission window of the grown crystal is between 261 and 1100 nm. The protonation of the amine group is conﬁrmed by nuclear magnetic resonance spectral analysis. Z-Scan analysis was carried out to determine the nonlinear optical parameters. It reveals that the nonlinear susceptibility (χ³) value is greater than some reported crystals. The title crystal exhibits saturable absorption and self-defocussing effects.
Volume 42 | Issue 6
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