Molecular Dynamics of Octyl Urea Crystals Analyzed by Solid-state NMR

• Ryutaro Ohashi

  Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University

• Gou Wakabayashi

  Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University

• Motohiro Mizuno

  Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University

• Takahiro Soeta

  Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University

• Masao Hashimoto

  Department of Chemistry, Graduate School of Science, Kobe University

• Kimiaki Yamamura

  Department of Chemistry, Graduate School of Science, Kobe University

Abstract

Octyl urea has one solid–solid phase transition at the temperature of 353.2 K. The solid–solid phase transition of octyl urea has a large entropy, that is comparable to its melting entropy. In this study, octyl urea was examined by solid-state NMR in order to investigate the sources of the large transition entropy. The NMR results indicate that conformational exchange and molecular motion in the octyl urea are the sources of the large entropy of the solid–solid transition.

Journal

• Chemistry Letters

  Chemistry Letters 41 (11), 1433-1435, 2012-10-27

  Oxford University Press (OUP)

Keywords

• General Chemistry

Details

• CRID: 1360846644041768064
• NII Article ID: 130004426391
• DOI: 10.1246/cl.2012.1433
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/41/11/1433/55634839/cl.2012.1433.pdf
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