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Unusual Structures, Phase Behavior, and Fluorescent Properties of 3-phenyl-1-(pyridin-2-yl)-1H-pyrazol-5-amine and Its’ ZnCl2 Complex

preprint
submitted on 30.10.2019, 13:41 and posted on 31.10.2019, 19:01 by Lana K. Hiscock, Delara Joekar, Zachary W. Schroeder, Victoria Jarvis, Kenneth E. Maly, Louise Dawe
The synthesis and single crystal structures of 3-phenyl-1-(pyridin-2-yl)-1H-pyrazol-5-amine (L1) and its complex with ZnCl2 are reported. L1 exhibits supercooling, with a difference in melting and solidification points of over 100 oC. The complex [L1ZnCl2] has a room-to-low temperature single crystal-to-crystal phase transition in the solid state, while a birefringent fluid phase mixed with crystalline domains is observed at high temperatures. Significant fluorescence enhancement is observed upon formation of the ZnCl2 complex.

History

Email Address of Submitting Author

ldawe@wlu.ca

Institution

Wilfrid Laurier University

Country

Canada

ORCID For Submitting Author

0000-0003-3630-990X

Declaration of Conflict of Interest

The authors declare no competing financial interests.

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