Crystallographic Combinations: Understanding Polymorphism and Approximate Symmetry in <i>N</i>-(1,3-Thiazol-2-yl)benzamide

A new polymorph of <i>N</i>-(1,3-thiazol-2-yl)benzamide crystallises in the monoclinic space group <i>Pc</i> with four crystallographically independent molecules (Z′ = 4) in the asymmetric unit. Where the previously reported polymorphs exhibit two distinct hydrogen-bonded dim...

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Main Authors: Johannes C. Voigt, Michael J. Hall, Paul G. Waddell
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Crystals
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Online Access:https://www.mdpi.com/2073-4352/15/7/657
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author Johannes C. Voigt
Michael J. Hall
Paul G. Waddell
author_facet Johannes C. Voigt
Michael J. Hall
Paul G. Waddell
author_sort Johannes C. Voigt
collection DOAJ
description A new polymorph of <i>N</i>-(1,3-thiazol-2-yl)benzamide crystallises in the monoclinic space group <i>Pc</i> with four crystallographically independent molecules (Z′ = 4) in the asymmetric unit. Where the previously reported polymorphs exhibit two distinct hydrogen-bonded dimer geometries exclusively, the asymmetric unit of the new polymorph comprises both. Approximate symmetry was observed to relate the molecules of these dimers. These approximate symmetry elements combine to form a structure with distorted <i>P</i>2<sub>1</sub>/<i>c</i> space group symmetry, rationalising the unexpectedly high number of crystallographically independent molecules.
format Article
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publisher MDPI AG
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spelling doaj-art-cfeff414b8ac468298243059cdad42692025-08-20T03:07:57ZengMDPI AGCrystals2073-43522025-07-0115765710.3390/cryst15070657Crystallographic Combinations: Understanding Polymorphism and Approximate Symmetry in <i>N</i>-(1,3-Thiazol-2-yl)benzamideJohannes C. Voigt0Michael J. Hall1Paul G. Waddell2Institute of Organic Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, GermanySchool of Natural and Environmental Sciences, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, UKSchool of Natural and Environmental Sciences, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, UKA new polymorph of <i>N</i>-(1,3-thiazol-2-yl)benzamide crystallises in the monoclinic space group <i>Pc</i> with four crystallographically independent molecules (Z′ = 4) in the asymmetric unit. Where the previously reported polymorphs exhibit two distinct hydrogen-bonded dimer geometries exclusively, the asymmetric unit of the new polymorph comprises both. Approximate symmetry was observed to relate the molecules of these dimers. These approximate symmetry elements combine to form a structure with distorted <i>P</i>2<sub>1</sub>/<i>c</i> space group symmetry, rationalising the unexpectedly high number of crystallographically independent molecules.https://www.mdpi.com/2073-4352/15/7/657polymorphismapproximate symmetryZ-primehydrogen bonding
spellingShingle Johannes C. Voigt
Michael J. Hall
Paul G. Waddell
Crystallographic Combinations: Understanding Polymorphism and Approximate Symmetry in <i>N</i>-(1,3-Thiazol-2-yl)benzamide
Crystals
polymorphism
approximate symmetry
Z-prime
hydrogen bonding
title Crystallographic Combinations: Understanding Polymorphism and Approximate Symmetry in <i>N</i>-(1,3-Thiazol-2-yl)benzamide
title_full Crystallographic Combinations: Understanding Polymorphism and Approximate Symmetry in <i>N</i>-(1,3-Thiazol-2-yl)benzamide
title_fullStr Crystallographic Combinations: Understanding Polymorphism and Approximate Symmetry in <i>N</i>-(1,3-Thiazol-2-yl)benzamide
title_full_unstemmed Crystallographic Combinations: Understanding Polymorphism and Approximate Symmetry in <i>N</i>-(1,3-Thiazol-2-yl)benzamide
title_short Crystallographic Combinations: Understanding Polymorphism and Approximate Symmetry in <i>N</i>-(1,3-Thiazol-2-yl)benzamide
title_sort crystallographic combinations understanding polymorphism and approximate symmetry in i n i 1 3 thiazol 2 yl benzamide
topic polymorphism
approximate symmetry
Z-prime
hydrogen bonding
url https://www.mdpi.com/2073-4352/15/7/657
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AT michaeljhall crystallographiccombinationsunderstandingpolymorphismandapproximatesymmetryinini13thiazol2ylbenzamide
AT paulgwaddell crystallographiccombinationsunderstandingpolymorphismandapproximatesymmetryinini13thiazol2ylbenzamide