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Six crystalline materials were obtained, including four cocrystals, a polymorph, and a solid solution. These were characterized by single\u2010crystal X\u2010ray diffraction (SC XRD), solid\u2010state NMR, FTIR, UV\u2010Vis spectroscopy, and DFT calculations. All cocrystals exhibited short \u03c0\u2010stacking interactions and varied noncovalent interactions (NCI) modulating the in\u2010plane motion of TFBQ.\n                    <jats:sup>19<\/jats:sup>\n                    F\n                    <jats:italic>T<\/jats:italic>\n                    \u2081 relaxation measurements allowed the quantification of the activation enthalpies (\n                    <jats:italic>\n                      \u0394H\n                      <jats:sup>\u2021<\/jats:sup>\n                    <\/jats:italic>\n                    ) and entropies (\n                    <jats:italic>\n                      \u0394S\n                      <jats:sup>\u2021<\/jats:sup>\n                    <\/jats:italic>\n                    ), with theoretical calculations backing these results. Cocrystal\n                    <jats:bold>4<\/jats:bold>\n                    is the solid with the most restricted motions due to the presence of strong hydrogen bonds. In contrast, cocrystal\n                    <jats:bold>3a<\/jats:bold>\n                    depicts the highest in\u2010plane motional frequencies (up to 2.2\u00a0MHz at 300 K), owing to the weak contacts around TFBQ. Surprisingly, a solid solution (\n                    <jats:bold>5<\/jats:bold>\n                    ), which resembled a mixture of cocrystals\n                    <jats:bold>2<\/jats:bold>\n                    and\n                    <jats:bold>3a<\/jats:bold>\n                    , displayed no significant in\u2010plane motions, despite having similar packing and relaxation behavior to the binary cocrystals. This work illustrates how subtle variations in donor structure affect the in\u2010plane motions and photophysical properties of CT cocrystals, providing valuable insight into the rational design of functional materials.\n                  <\/jats:p>","DOI":"10.1002\/chem.202501275","type":"journal-article","created":{"date-parts":[[2025,5,19]],"date-time":"2025-05-19T10:06:25Z","timestamp":1747649185000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Fine\u2010Tuning the Motion of Tetrafluoro\u20101,4\u2010Benzoquinone within Charge\u2010Transfer Cocrystals Through Variation of the Donor: An Entropic and Enthalpic Point of View"],"prefix":"10.1002","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4144-894X","authenticated-orcid":false,"given":"Armando","family":"Navarro\u2010Huerta","sequence":"first","affiliation":[{"name":"Instituto de Qu\u00edmica Universidad Nacional Aut\u00f3noma de M\u00e9xico  Circuito Exterior S\/N, Ciudad Universitaria Coyoac\u00e1n 04510 Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9517-1763","authenticated-orcid":false,"given":"Martha E.","family":"Garc\u00eda\u2010Aguilera","sequence":"additional","affiliation":[{"name":"Instituto de Qu\u00edmica Universidad Nacional Aut\u00f3noma de M\u00e9xico  Circuito Exterior S\/N, Ciudad Universitaria Coyoac\u00e1n 04510 Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7752-8370","authenticated-orcid":false,"given":"Jan","family":"Blahut","sequence":"additional","affiliation":[{"name":"Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences  Prague 160 00 Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erika","family":"Bart\u016f\u0148kov\u00e1","sequence":"additional","affiliation":[{"name":"Institute of Organic Chemistry and Biochemistry Czech Academy of Sciences  Prague 160 00 Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4380-9251","authenticated-orcid":false,"given":"Rub\u00e9n A.","family":"Toscano","sequence":"additional","affiliation":[{"name":"Instituto de Qu\u00edmica Universidad Nacional Aut\u00f3noma de M\u00e9xico  Circuito Exterior S\/N, Ciudad Universitaria Coyoac\u00e1n 04510 Mexico"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5129-3147","authenticated-orcid":false,"given":"Mario","family":"Rodr\u00edguez","sequence":"additional","affiliation":[{"name":"Research Group of Optical Properties of Materials (GPOM) Centro de Investigaciones en \u00d3ptica CIO  , Apdo. 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