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Effect of alkali metal doping on the properties and crystalline perfection of bis(thiourea)zinc(II) chloride crystals

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Abstract

The influence of sodium doping on the properties of bis(thiourea)zinc(II) chloride crystals has been described. The reduction in the intensity observed in powder X-ray diffraction of doped specimen and slight shifts in vibrational frequencies confirm the lattice stress as a result of doping. The incorporation of Na(I) into the crystal lattice was confirmed by energy dispersive X-ray spectroscopy. Surface morphological changes due to doping of the alkali metal are observed by scanning electron microscopy. The TG–DTA studies reveal the purity of the material and no decomposition is observed up to the melting point. The high resolution X-ray diffraction studies reveal that the crystalline quality is improved considerably by doping with alkali metal. High transmittance is observed and cut off λ is ~270 nm.

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Muthu, K., Bhagavannarayana, G., Meenakashisundaram, S.P. et al. Effect of alkali metal doping on the properties and crystalline perfection of bis(thiourea)zinc(II) chloride crystals. J Therm Anal Calorim 108, 927–932 (2012). https://doi.org/10.1007/s10973-012-2366-7

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