Two samples of [(C18H37)2(CH3)2N]2[SmCl5] were synthesized and evaluated for possible liquid-crystalline behavior. Gravimetric analysis, complexometric titration, combustion analysis, and laboratory analysis were used to help determine the elemental composition of the samples. Melting point determination, differential scanning calorimetry, polarizing optical microscopy, and Fourier-transform infrared spectroscopy were used to determine the molecular structure and any liquid-crystalline properties expressed by the samples. It was determined that a large quantity of methanol remained in the samples after synthesis. This was demonstrated by their high percent yields and an O-H peak produced in the IR spectra. Elemental analysis revealed that the experimental percent weight carbon, hydrogen, and nitrogen agree with theoretical values of the proposed compound formula. The percent weights of chlorine and samarium did not agree with their theoretical values. The theoretical percent weights of each element were based on the proposed formula [(C18H37)2(CH3)2N]2[SmCl5]. Liquid-crystalline behavior was not observed in either sample. This may be attributed to the presence of excess methanol or the synthesized compound is different from what was expected.

Synthesis and characterization of dimethyldioctadecylammonium pentachlorosamarate(III)

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.