Unsealed Ultrasound-Assisted Synthesis of Cadmium and Lead Iodide Intercalation Compounds

The ultrasonic effect on the interaction and phase composition of compounds of cadmium and lead iodides with organic cyclic amines such as pyridine (py), piperidine (pp), and aniline (an) was studied. The samples were characterized by thermal and X-ray powder diffraction analyses; their NQR and IR spectra were recorded. Novel, ultimately, intercalated phases were prepared: PbI2pp8.3 ± 0.2, CdI2py4.3 ± 0.2, and CdI2py6.0 ± 0.2. The ultrasonic treatment significantly shortened the equilibration time in the systems in question. Complex formation proved to be more profitable in terms of energy for the CdI2-py, CdI2-an, and CdI2-pp systems.