Solvent-induced polymorphism in dipodal N-donor ligands containing a biphenyl core
Polymorph screenings for two related dipodal N-donor ligands containing a biphenyl core, namely 4,4′-bis(pyridin-4-ylmethyl)-1,1′-biphenyl ( 1 ) and 4,4′-bis(1 H -imidazol-1-ylmethyl)-1,1′-biphenyl ( 2 ) were performed, and the new phases were isolated and their crystal structures analysed. Profilin...
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Published in | RSC advances Vol. 13; no. 44; pp. 3625 - 3632 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
18.10.2023
The Royal Society of Chemistry |
Subjects | |
Online Access | Get full text |
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Summary: | Polymorph screenings for two related dipodal N-donor ligands containing a biphenyl core, namely 4,4′-bis(pyridin-4-ylmethyl)-1,1′-biphenyl (
1
) and 4,4′-bis(1
H
-imidazol-1-ylmethyl)-1,1′-biphenyl (
2
) were performed, and the new phases were isolated and their crystal structures analysed. Profiling included methods such as PXRD and thermal analysis. Hirshfeld surface analyses, as well as crystal lattice energy calculations provided deeper insight in the interplay of the intermolecular forces and the stability of the isolated phases. Furthermore, our studies revealed the presence of solvent-induced polymorphism, whereby the metastable phase is dominant upon crystallisation from THF (
1a
) and EtOH (
2c
). Upon heating, these phases transform into a more stable form, whereby the transformations were followed by PXRD studies (
1
,
2
).
Polymorph screenings performed for two related dipodal N-donor ligands containing a biphenyl core revealed solvent-induced polymorphism. |
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Bibliography: | CCDC upon recrystallisation from a range of solvents, packing diagrams of Electronic supplementary information (ESI) available: NMR spectra of , thermograms of 1a 2b 1 1b 2c For ESI and crystallographic data in CIF or other electronic format see DOI 2 2253373-2253376 and powder patterns obtained for https://doi.org/10.1039/d3ra05713e ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2046-2069 2046-2069 |
DOI: | 10.1039/d3ra05713e |