A study on the role of nickel chloride in bisthiourea magnesium chloride – Linear semiorganic crystal

Single crystals of bisthiourea magnesium chloride (BTMGC) mixed with nickel chloride were grown by slow evaporation solution growth technique using water as solvent in a constant temperature bath designed by the authors. The lattice parameters of the grown crystals are measured from X-ray diffraction studies. Infrared spectra were recorded to determine the symmetries of the molecular structure. The observed infrared bands were also assigned and discussed. The optical transmission spectral study was carried out to test the transmitting ability of these crystals in the visible range. The second harmonic generation test of BTMGC revealed that the linear nature of the pure BTMGC crystal gets transformed into non-linear nature when mixed with nickel chloride. The TGA/DTA curves recorded for the investigated crystals depict small changes upon mixing.