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https://doi.org/10.1021/cg0498812
DC Field | Value | |
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dc.title | A new polymorph of 4-pyridinethione containing a helical assembly based on N-H⋯S hydrogen bonds | |
dc.contributor.author | Muthu, S. | |
dc.contributor.author | Vittal, J.J. | |
dc.date.accessioned | 2014-10-16T08:18:49Z | |
dc.date.available | 2014-10-16T08:18:49Z | |
dc.date.issued | 2004-11 | |
dc.identifier.citation | Muthu, S., Vittal, J.J. (2004-11). A new polymorph of 4-pyridinethione containing a helical assembly based on N-H⋯S hydrogen bonds. Crystal Growth and Design 4 (6) : 1181-1184. ScholarBank@NUS Repository. https://doi.org/10.1021/cg0498812 | |
dc.identifier.issn | 15287483 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/92966 | |
dc.description.abstract | Tautomerization of 4-mercaptopyridine in absolute ethanol at two different temperatures leads to the formation of two polymorphs. In the polymorph 1, obtained by refluxing the ethanolic solution of 4-mercaptopyridine and layering with ether, the molecules are arranged in a helical conformation through N-H⋯S hydrogen bonds. On the other hand, the previously reported polymorph 2 is an N-H⋯S bonded zigzag chain and can be prepared by layering an ethanolic solution of 4-pyridinethione with ether at 5°C. Apart from the different structural motifs, N-H⋯S, C-H⋯S hydrogen bonds, π⋯π and C-H⋯π interactions make a significant difference between the two structures. Both polymorphs exhibit solid-state photoluminescence due to π-π* transition. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/cg0498812 | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | CHEMISTRY | |
dc.description.doi | 10.1021/cg0498812 | |
dc.description.sourcetitle | Crystal Growth and Design | |
dc.description.volume | 4 | |
dc.description.issue | 6 | |
dc.description.page | 1181-1184 | |
dc.identifier.isiut | 000224983100016 | |
Appears in Collections: | Staff Publications |
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