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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 and posted on 31.10.2019 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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