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Molecular reorientation in a dehydration process of an organic polar salt of 2,4-diaminotoluene/L(+)-tartaric acid

Published online by Cambridge University Press:  23 February 2017

Weicai Ju ,
Simin Qiu ,
Yaqiu Tao ,
Xiaodong Shen  and
Zhigang Pan
Weicai Ju
Affiliation:
College of Materials Science and Engineering, Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, China
Simin Qiu
Affiliation:
College of Materials Science and Engineering, Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, China
Yaqiu Tao
Affiliation:
College of Materials Science and Engineering, Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, China
Xiaodong Shen
Affiliation:
College of Materials Science and Engineering, Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, China
Zhigang Pan*
Affiliation:
College of Materials Science and Engineering, Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, China
*
a)Author to whom correspondence should be addressed. Electronic mail: panzhigang@njtech.edu.cn
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Abstract

An organic polar hydrate was obtained through cocrystallization of 2,4-diaminotoluene (2,4-DAT) and L(+)-tartaric acid (TA) from ethanol. Dehydration behavior of the obtained hydrate was investigated using variable temperature powder X-ray diffraction (PXRD) and thermal analysis. Proton transfer from L(+)-TA to 2,4-DAT in both hydrate and dehydrated form was revealed via Fourier transform infrared spectroscopy. The crystal structures of both forms were determined using PXRD techniques. The similarities and differences between two crystal structures were analyzed and the role of water in the hydrate crystal structure was demonstrated.

Keywords

organic polar materialscocrystallizationdehydration
Type
Technical Articles
Information
Powder Diffraction , Volume 32 , Issue 1 , March 2017 , pp. 15 - 22
Copyright
Copyright © International Centre for Diffraction Data 2017 

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