Snap frozen! Capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine
Four polymorphs are described for the one-dimensional coordination polymer {Cd[S2P(OMe)2]2(4-pyridine-aldazine)}n (1) which features a trans-N2S4 distorted octahedral coordination geometry. Lattice energy calculations show the room temperature form, 1α, is the thermodynamically stable phase, being...
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American Chemical Society
2020
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| Online Access: | http://eprints.sunway.edu.my/1278/ http://eprints.sunway.edu.my/1278/1/Tiekink%20Cryst%20Growth%20Des%202020%2020%203272.pdf |
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| author | Tan, Yee Seng * Otero-de-la-Roza, Alberto Jotani, Mukesh M. Tiekink, Edward R. T. * |
| author_facet | Tan, Yee Seng * Otero-de-la-Roza, Alberto Jotani, Mukesh M. Tiekink, Edward R. T. * |
| author_sort | Tan, Yee Seng * |
| building | SU Institutional Repository |
| collection | Online Access |
| description | Four polymorphs are described for the one-dimensional coordination polymer {Cd[S2P(OMe)2]2(4-pyridine-aldazine)}n (1) which features a trans-N2S4 distorted octahedral coordination geometry. Lattice energy calculations show the room temperature form, 1α, is the
thermodynamically stable phase, being 1.52 kcal/mol more stable than the 1β form per unit formula. The latter is formed at 233 K on cooling 1α based on single crystal data. Single crystals of forms 1α and 1β exhibit a reversible single-crystal-single-crystal phase change which also 2 occurs in the bulk form as seen in DSC and PXRD experiments. When 1 was “snap frozen” at 100
K under a cold stream, 1β was observed most of the time but sometimes forms 1γ and 1δ were found. When warmed, 1β converted to 1α by 293 K, and each of 1γ and 1δ first converted to 1β (120-130 and 140-150 K, respectively) and then to 1α (280 K), correlating with the calculated
lattice energies; subsequent cooling only yielded 1β, indicating 1γ and 1δ are metastable forms. The polymorphs exhibit different molecular packing patterns based on different non-covalent interactions and these have been evaluated by Hirshfeld surface analyses and NCI plots. |
| first_indexed | 2025-11-14T21:16:38Z |
| format | Article |
| id | sunway-1278 |
| institution | Sunway University |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T21:16:38Z |
| publishDate | 2020 |
| publisher | American Chemical Society |
| recordtype | eprints |
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| spelling | sunway-12782020-10-07T07:46:42Z http://eprints.sunway.edu.my/1278/ Snap frozen! Capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine Tan, Yee Seng * Otero-de-la-Roza, Alberto Jotani, Mukesh M. Tiekink, Edward R. T. * QD Chemistry Four polymorphs are described for the one-dimensional coordination polymer {Cd[S2P(OMe)2]2(4-pyridine-aldazine)}n (1) which features a trans-N2S4 distorted octahedral coordination geometry. Lattice energy calculations show the room temperature form, 1α, is the thermodynamically stable phase, being 1.52 kcal/mol more stable than the 1β form per unit formula. The latter is formed at 233 K on cooling 1α based on single crystal data. Single crystals of forms 1α and 1β exhibit a reversible single-crystal-single-crystal phase change which also 2 occurs in the bulk form as seen in DSC and PXRD experiments. When 1 was “snap frozen” at 100 K under a cold stream, 1β was observed most of the time but sometimes forms 1γ and 1δ were found. When warmed, 1β converted to 1α by 293 K, and each of 1γ and 1δ first converted to 1β (120-130 and 140-150 K, respectively) and then to 1α (280 K), correlating with the calculated lattice energies; subsequent cooling only yielded 1β, indicating 1γ and 1δ are metastable forms. The polymorphs exhibit different molecular packing patterns based on different non-covalent interactions and these have been evaluated by Hirshfeld surface analyses and NCI plots. American Chemical Society 2020-03-24 Article PeerReviewed text en cc_by_nc_4 http://eprints.sunway.edu.my/1278/1/Tiekink%20Cryst%20Growth%20Des%202020%2020%203272.pdf Tan, Yee Seng * and Otero-de-la-Roza, Alberto and Jotani, Mukesh M. and Tiekink, Edward R. T. * (2020) Snap frozen! Capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine. Crystal Growth & Design, 20 (5). pp. 3272-3283. ISSN 1528-7483 http://doi.org/10.1021/acs.cgd.0c00082 doi:10.1021/acs.cgd.0c00082 |
| spellingShingle | QD Chemistry Tan, Yee Seng * Otero-de-la-Roza, Alberto Jotani, Mukesh M. Tiekink, Edward R. T. * Snap frozen! Capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine |
| title | Snap frozen! Capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine |
| title_full | Snap frozen! Capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine |
| title_fullStr | Snap frozen! Capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine |
| title_full_unstemmed | Snap frozen! Capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine |
| title_short | Snap frozen! Capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine |
| title_sort | snap frozen! capturing two metastable polymorphs in a tetramorphic one-dimensional coordination polymer constructed from cadmium, dithiophosphate, and 4-pyridinealdazine |
| topic | QD Chemistry |
| url | http://eprints.sunway.edu.my/1278/ http://eprints.sunway.edu.my/1278/ http://eprints.sunway.edu.my/1278/ http://eprints.sunway.edu.my/1278/1/Tiekink%20Cryst%20Growth%20Des%202020%2020%203272.pdf |