Reply to comment on Couzi et al. (2018): a phenomenological model for structural phase transitions in incommensurate alkane/urea inclusion compounds
In a recent paper (Couzi et al. 2018 R. Soc. open sci. 5, 180058. (doi:10.1098/rsos.180058)), we proposed a new phenomenological model to account for the I↔II↔“III” phase sequence in incommensurate n-alkane/urea inclusion compounds, which represents an alternative interpretation to that proposed in...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The Royal Society
2019-08-01
|
| Series: | Royal Society Open Science |
| Subjects: | |
| Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190518 |
| _version_ | 1819209539198648320 |
|---|---|
| author | Kirsten Christensen P. Andrew Williams Rhian Patterson Benjamin A. Palmer Michel Couzi François Guillaume Kenneth D. M. Harris |
| author_facet | Kirsten Christensen P. Andrew Williams Rhian Patterson Benjamin A. Palmer Michel Couzi François Guillaume Kenneth D. M. Harris |
| author_sort | Kirsten Christensen |
| collection | DOAJ |
| description | In a recent paper (Couzi et al. 2018 R. Soc. open sci. 5, 180058. (doi:10.1098/rsos.180058)), we proposed a new phenomenological model to account for the I↔II↔“III” phase sequence in incommensurate n-alkane/urea inclusion compounds, which represents an alternative interpretation to that proposed in work of Toudic et al. In a Comment (Toudic et al. 2019 R. Soc. open sci. 6, 182073. (doi:10.1098/rsos.182073)), Toudic et al. have questioned our assignment of the superspace group of phase II of n-nonadecane/urea, which they have previously assigned, based on a (3 + 2)-dimensional superspace, as C2221(00γ)(10δ). In this Reply, we present new results from a comprehensive synchrotron single-crystal X-ray diffraction study of n-nonadecane/urea, involving measurements as a detailed function of temperature across the I↔II↔“III” phase transition sequence. Our results demonstrate conclusively that “main reflections” (h, k, l, 0) with h+k odd are observed in phase II of n-nonadecane/urea (including temperatures in phase II that are just below the transition from phase I to phase II), in full support of our assignment of the (3+1)-dimensional superspace group P212121(00γ) to phase II. As our phenomenological model is based on phase II and phase “III” of this incommensurate material having the same (3+1)-dimensional superspace group P212121(00γ), it follows that the new X-ray diffraction results are in full support of our phenomenological model. |
| first_indexed | 2024-12-23T05:56:53Z |
| format | Article |
| id | doaj.art-4ab405caa408422a8cf02f3a775a8ba1 |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-12-23T05:56:53Z |
| publishDate | 2019-08-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-4ab405caa408422a8cf02f3a775a8ba12022-12-21T17:57:47ZengThe Royal SocietyRoyal Society Open Science2054-57032019-08-016810.1098/rsos.190518190518Reply to comment on Couzi et al. (2018): a phenomenological model for structural phase transitions in incommensurate alkane/urea inclusion compoundsKirsten ChristensenP. Andrew WilliamsRhian PattersonBenjamin A. PalmerMichel CouziFrançois GuillaumeKenneth D. M. HarrisIn a recent paper (Couzi et al. 2018 R. Soc. open sci. 5, 180058. (doi:10.1098/rsos.180058)), we proposed a new phenomenological model to account for the I↔II↔“III” phase sequence in incommensurate n-alkane/urea inclusion compounds, which represents an alternative interpretation to that proposed in work of Toudic et al. In a Comment (Toudic et al. 2019 R. Soc. open sci. 6, 182073. (doi:10.1098/rsos.182073)), Toudic et al. have questioned our assignment of the superspace group of phase II of n-nonadecane/urea, which they have previously assigned, based on a (3 + 2)-dimensional superspace, as C2221(00γ)(10δ). In this Reply, we present new results from a comprehensive synchrotron single-crystal X-ray diffraction study of n-nonadecane/urea, involving measurements as a detailed function of temperature across the I↔II↔“III” phase transition sequence. Our results demonstrate conclusively that “main reflections” (h, k, l, 0) with h+k odd are observed in phase II of n-nonadecane/urea (including temperatures in phase II that are just below the transition from phase I to phase II), in full support of our assignment of the (3+1)-dimensional superspace group P212121(00γ) to phase II. As our phenomenological model is based on phase II and phase “III” of this incommensurate material having the same (3+1)-dimensional superspace group P212121(00γ), it follows that the new X-ray diffraction results are in full support of our phenomenological model.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190518incommensurate composite materialssolid-state phase transitionssuperspace groupsurea inclusion compounds |
| spellingShingle | Kirsten Christensen P. Andrew Williams Rhian Patterson Benjamin A. Palmer Michel Couzi François Guillaume Kenneth D. M. Harris Reply to comment on Couzi et al. (2018): a phenomenological model for structural phase transitions in incommensurate alkane/urea inclusion compounds Royal Society Open Science incommensurate composite materials solid-state phase transitions superspace groups urea inclusion compounds |
| title | Reply to comment on Couzi et al. (2018): a phenomenological model for structural phase transitions in incommensurate alkane/urea inclusion compounds |
| title_full | Reply to comment on Couzi et al. (2018): a phenomenological model for structural phase transitions in incommensurate alkane/urea inclusion compounds |
| title_fullStr | Reply to comment on Couzi et al. (2018): a phenomenological model for structural phase transitions in incommensurate alkane/urea inclusion compounds |
| title_full_unstemmed | Reply to comment on Couzi et al. (2018): a phenomenological model for structural phase transitions in incommensurate alkane/urea inclusion compounds |
| title_short | Reply to comment on Couzi et al. (2018): a phenomenological model for structural phase transitions in incommensurate alkane/urea inclusion compounds |
| title_sort | reply to comment on couzi et al 2018 a phenomenological model for structural phase transitions in incommensurate alkane urea inclusion compounds |
| topic | incommensurate composite materials solid-state phase transitions superspace groups urea inclusion compounds |
| url | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190518 |
| work_keys_str_mv | AT kirstenchristensen replytocommentoncouzietal2018aphenomenologicalmodelforstructuralphasetransitionsinincommensuratealkaneureainclusioncompounds AT pandrewwilliams replytocommentoncouzietal2018aphenomenologicalmodelforstructuralphasetransitionsinincommensuratealkaneureainclusioncompounds AT rhianpatterson replytocommentoncouzietal2018aphenomenologicalmodelforstructuralphasetransitionsinincommensuratealkaneureainclusioncompounds AT benjaminapalmer replytocommentoncouzietal2018aphenomenologicalmodelforstructuralphasetransitionsinincommensuratealkaneureainclusioncompounds AT michelcouzi replytocommentoncouzietal2018aphenomenologicalmodelforstructuralphasetransitionsinincommensuratealkaneureainclusioncompounds AT francoisguillaume replytocommentoncouzietal2018aphenomenologicalmodelforstructuralphasetransitionsinincommensuratealkaneureainclusioncompounds AT kennethdmharris replytocommentoncouzietal2018aphenomenologicalmodelforstructuralphasetransitionsinincommensuratealkaneureainclusioncompounds |