Cadmium Iodate Syntheses and Characterization

Hebboul Zoulikha

A chapter in Heavy Metals from IntechOpen

Abstract: Six polymorphs of anhydrous cadmium iodate are characterized, three of which showing second harmonic generation activity (SHG). Single crystals of Cd(IO3)2·H2O are obtained by slow evaporation of aqueous solutions of CdCl2 and KIO3. This compound crystallizes in the triclinic space group P1¯, a = 7.119(2), b = 7.952(2), c = 6.646(2)Å, ? = 102.17(2)°, ? = 114.13(2)°, and ? = 66.78(4)°. Three chemical routes of preparation of chloro cadmium iodate CdIO3Cl are given. The prepared material was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The crystal structure has been determined by single-crystal X-ray diffraction methods; the unit cell is orthorhombic with a = 7.270(0) Å, b = 15.995 (0) Å, c = 7.1980 (0) Å V = 837.009(1) Å3, and Z = 8. The space group is CmCa. The cadmium hydroxy-iodate CdIO3OH is synthesized in the form of transparent platelets in the same way as CdIO3Cl; the unit cell is orthorhombic with a = 11.5245(11) Å, b = 6.7985 (7) Å, c = 4.7303 (4) Å, V = 304.31(1) Å3, and Z = 4.

Keywords: cadmium; iodate; XRD; SHG; polymorphism; mixed ligand (search for similar items in EconPapers)
JEL-codes: Q55 (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:ito:pchaps:133417

DOI: 10.5772/intechopen.73866

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