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

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.

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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

10.26434/chemrxiv.10078943 ◽

2019 ◽

Author(s):

Lana K. Hiscock ◽

Delara Joekar ◽

Zachary W. Schroeder ◽

Victoria Jarvis ◽

Kenneth E. Maly ◽

...

Keyword(s):

Phase Transition ◽

Solid State ◽

Single Crystal ◽

Fluorescence Enhancement ◽

Fluid Phase ◽

Fluorescent Properties ◽

Single Crystal Structures ◽

Crystal Phase Transition ◽

Crystalline Domains ◽

Melting And Solidification

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Measuring the Temperature Width of a First-Order Single Crystal to Single Crystal Phase Transition Using Solid-State NMR: Application to the Polymorphism of 2-(2,4-Dinitrobenzyl)-3-methylpyridine

Journal of the American Chemical Society ◽

10.1021/ja991204m ◽

1999 ◽

Vol 121 (49) ◽

pp. 11291-11299 ◽

Cited By ~ 32

Author(s):

A. Schmidt ◽

S. Kababya ◽

M. Appel ◽

S. Khatib ◽

M. Botoshansky ◽

...

Keyword(s):

Phase Transition ◽

Solid State ◽

Single Crystal ◽

Solid State Nmr ◽

Crystal Phase ◽

First Order ◽

Crystal Phase Transition

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Reversible crystal-to-crystal phase transition in dibromobis(4-vinylpyridine)zinc

Zeitschrift für Kristallographie - Crystalline Materials ◽

10.1524/zkri.218.11.761.20299 ◽

2003 ◽

Vol 218 (11) ◽

Cited By ~ 5

Author(s):

Chunhua Hu ◽

Jürgen Huster ◽

Ullrich Englert

Keyword(s):

Phase Transition ◽

Solid State ◽

Single Crystal ◽

Low Temperatures ◽

Crystal Phase ◽

Tetrahedral Complex ◽

X Ray Diffraction ◽

Temperature Dependent ◽

X Ray ◽

Crystal Phase Transition

AbstractIn the solid state the mononuclear tetrahedral complex dibromobis(4-vinylpyridine)zinc shows a reversible crystal-to-crystal phase transition which was studied by temperature dependent single crystal X-ray diffraction experiments. At low temperatures the compound crystallizes in space group

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Single-crystal to single-crystal phase transition of cucurbit[5]uril hydrochloride hydrates: large water-filled channels transforming to layers of unusual stability

Chemical Communications ◽

10.1039/b807033d ◽

2008 ◽

pp. 4927 ◽

Cited By ~ 28

Author(s):

David Bardelang ◽

Konstantin A. Udachin ◽

Roberto Anedda ◽

Igor Moudrakovski ◽

Donald M. Leek ◽

...

Keyword(s):

Phase Transition ◽

Single Crystal ◽

Crystal Phase ◽

Crystal Phase Transition ◽

Large Water

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A 3D-Coordination Polymer Assembled from Copper Propionate Paddlewheels and Potassium Propionate 1D-Polymeric Rods Possessing a Temperature-Driven Single-Crystal-to-Single-Crystal Phase Transition

Crystal Growth & Design ◽

10.1021/acs.cgd.1c00637 ◽

2021 ◽

Author(s):

Mikhail Kendin ◽

Artem Nikiforov ◽

Roman Svetogorov ◽

Pavel Degtyarenko ◽

Dmitry Tsymbarenko

Keyword(s):

Phase Transition ◽

Coordination Polymer ◽

Single Crystal ◽

Crystal Phase ◽

Crystal Phase Transition

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Switching the Conformation of 3,2′:6′,3″-tpy Domains in 4′-(4-n-Alkyloxyphenyl)-3,2′:6′,3″-Terpyridines

Molecules ◽

10.3390/molecules25143162 ◽

2020 ◽

Vol 25 (14) ◽

pp. 3162 ◽

Cited By ~ 2

Author(s):

Dalila Rocco ◽

Alessandro Prescimone ◽

Edwin C. Constable ◽

Catherine E. Housecroft

Keyword(s):

Solid State ◽

Single Crystal ◽

Crystal Structures ◽

Dominant Role ◽

Van Der Waals Interactions ◽

Single Crystal Structures ◽

Solid State Structures ◽

Packing Interactions ◽

Adjacent Sheet

The preparation and characterization of 4′-(4-n-octyloxyphenyl)-3,2′:6′,3″-terpyridine (8) and 4′-(4-n-nonyloxyphenyl)-3,2′:6′,3″-terpyridine (9) are reported. The single crystal structures of 4′-(4-n-hexyloxyphenyl)-3,2′:6′,3″-terpyridine (6), 4′-(4-n-heptyloxyphenyl)-3,2′:6′,3″-terpyridine (7), and compounds 8 and 9 have been determined. The conformation of the 3,2′:6′,3″-tpy unit is trans,trans in 6 and 7, but switches to cis,trans in 8 and 9. This is associated with significant changes in the packing interactions with a more dominant role for van der Waals interactions between adjacent n-alkyloxy chains and C–Hmethylene... π interactions in 8 and 9. The solid-state structures of 6 and 7 with the n-hexyloxy and n-heptyloxy chains feature interwoven sheets of supramolecular assemblies of molecules, with pairs of n-alkyloxy chains threaded through cavities in an adjacent sheet.

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Reversible crystal deformation of a single-crystal host of copper(ii) 1-naphthoate—pyrazine through crystal phase transition induced by methanol vapor sorption

Chemical Communications ◽

10.1039/c4cc09948f ◽

2015 ◽

Vol 51 (24) ◽

pp. 5024-5027 ◽

Cited By ~ 5

Author(s):

Yuichi Takasaki ◽

Satoshi Takamizawa

Keyword(s):

Phase Transition ◽

Single Crystal ◽

Order Phase Transition ◽

Crystal Phase ◽

Vapor Sorption ◽

Methanol Vapor ◽

First Order ◽

First Order Phase Transition ◽

Crystal Phase Transition ◽

First Order Phase

A single-crystal host of copper(ii) 1-naphthoate—pyrazine reversibly deformed during the first-order phase transition induced by methanol vapor desorption and adsorption.

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