Additive-driven microwave crystallization of tyramine polymorphs and salts: a quantum crystallography perspective

Polymorphism – the ability of a compound to exist in multiple crystalline forms – needs to be carefully considered in the design of functional materials, particularly in the context of cocrystallization. Tyramine, a biogenic amine, is a promising candidate for polymorph exploration due to its confor...

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Main Authors: Szymon Grabowski, Klaudia Nowakowska, Helena Butkiewicz, Anna Hoser, Aleksandra Wesełucha-Birczyńska, Tomasz Seidler, Paulina Moskal, Marlena Gryl
Format: Article
Language:English
Published: International Union of Crystallography 2025-05-01
Series:IUCrJ
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Online Access:https://journals.iucr.org/paper?S2052252525002210
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author Szymon Grabowski
Klaudia Nowakowska
Helena Butkiewicz
Anna Hoser
Aleksandra Wesełucha-Birczyńska
Tomasz Seidler
Paulina Moskal
Marlena Gryl
author_facet Szymon Grabowski
Klaudia Nowakowska
Helena Butkiewicz
Anna Hoser
Aleksandra Wesełucha-Birczyńska
Tomasz Seidler
Paulina Moskal
Marlena Gryl
author_sort Szymon Grabowski
collection DOAJ
description Polymorphism – the ability of a compound to exist in multiple crystalline forms – needs to be carefully considered in the design of functional materials, particularly in the context of cocrystallization. Tyramine, a biogenic amine, is a promising candidate for polymorph exploration due to its conformational flexibility and ability to form salts. In this study, we investigate the crystallization of tyramine polymorphs using additives and microwave-assisted techniques. Our findings reveal the formation of a new tyramine polymorph and two distinct salts, highlighting the impact of microwave radiation and additive-driven crystallization on polymorph stability and molecular encapsulation. The study demonstrates that the triclinic tyramine polymorph (T2) is thermodynamically more stable due to its lower electronic energy, whereas the monoclinic form (T1) features slightly stronger intermolecular interactions. Over time, in solution, crystals of barbital–tyramine salts (C1 and C2) begin to form, providing an opportunity to assess structural evolution. Optical properties calculations show significant maximum linear birefringence values (0.164 and 0.255) for two polymorphs of tyramine, whereas for C1, this value decreases to 0.095.
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spelling doaj-art-6b013bd55bfb4ac8941d96835eec2ee22025-08-20T02:55:58ZengInternational Union of CrystallographyIUCrJ2052-25252025-05-0112340341610.1107/S2052252525002210pen5003Additive-driven microwave crystallization of tyramine polymorphs and salts: a quantum crystallography perspectiveSzymon Grabowski0Klaudia Nowakowska1Helena Butkiewicz2Anna Hoser3Aleksandra Wesełucha-Birczyńska4Tomasz Seidler5Paulina Moskal6Marlena Gryl7Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, Krakow 30-387, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, Krakow 30-387, PolandBiological and Chemical Research Centre Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, Warsaw 02-089, PolandBiological and Chemical Research Centre Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, Warsaw 02-089, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, Krakow 30-387, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, Krakow 30-387, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, Krakow 30-387, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, Krakow 30-387, PolandPolymorphism – the ability of a compound to exist in multiple crystalline forms – needs to be carefully considered in the design of functional materials, particularly in the context of cocrystallization. Tyramine, a biogenic amine, is a promising candidate for polymorph exploration due to its conformational flexibility and ability to form salts. In this study, we investigate the crystallization of tyramine polymorphs using additives and microwave-assisted techniques. Our findings reveal the formation of a new tyramine polymorph and two distinct salts, highlighting the impact of microwave radiation and additive-driven crystallization on polymorph stability and molecular encapsulation. The study demonstrates that the triclinic tyramine polymorph (T2) is thermodynamically more stable due to its lower electronic energy, whereas the monoclinic form (T1) features slightly stronger intermolecular interactions. Over time, in solution, crystals of barbital–tyramine salts (C1 and C2) begin to form, providing an opportunity to assess structural evolution. Optical properties calculations show significant maximum linear birefringence values (0.164 and 0.255) for two polymorphs of tyramine, whereas for C1, this value decreases to 0.095.https://journals.iucr.org/paper?S2052252525002210tyraminepolymorphismmicrowave cocrystallizationelectron density studiesoptical properties
spellingShingle Szymon Grabowski
Klaudia Nowakowska
Helena Butkiewicz
Anna Hoser
Aleksandra Wesełucha-Birczyńska
Tomasz Seidler
Paulina Moskal
Marlena Gryl
Additive-driven microwave crystallization of tyramine polymorphs and salts: a quantum crystallography perspective
IUCrJ
tyramine
polymorphism
microwave cocrystallization
electron density studies
optical properties
title Additive-driven microwave crystallization of tyramine polymorphs and salts: a quantum crystallography perspective
title_full Additive-driven microwave crystallization of tyramine polymorphs and salts: a quantum crystallography perspective
title_fullStr Additive-driven microwave crystallization of tyramine polymorphs and salts: a quantum crystallography perspective
title_full_unstemmed Additive-driven microwave crystallization of tyramine polymorphs and salts: a quantum crystallography perspective
title_short Additive-driven microwave crystallization of tyramine polymorphs and salts: a quantum crystallography perspective
title_sort additive driven microwave crystallization of tyramine polymorphs and salts a quantum crystallography perspective
topic tyramine
polymorphism
microwave cocrystallization
electron density studies
optical properties
url https://journals.iucr.org/paper?S2052252525002210
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