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The main molecule represents a calix[4]arene and possesses a pinched cone shape, with the two distal\n                    <jats:italic>para<\/jats:italic>\n                    -amino groups at the wide rim of the macrocycle being brought into close proximity due to steric repulsion between the bulky trityl-amino and\n                    <jats:italic>tert<\/jats:italic>\n                    -butyl groups attached to the other two distal positions of the wide rim. In the crystal, the calixarene molecules are assembled by numerous C\u2014H...\u03c0 and van der Waals interactions, while the solvent molecules reside in the cavities forming C\u2014H...\u03c0 and Cl...\u03c0 contacts with the phenyl rings of the trityl group.\n                  <\/jats:p>","DOI":"10.1107\/s2056989025010886","type":"journal-article","created":{"date-parts":[[2025,12,4]],"date-time":"2025-12-04T07:04:24Z","timestamp":1764831864000},"page":"24-27","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":0,"title":["Synthesis and crystal structure of 5,17-diamino-11-\n                    <i>tert<\/i>\n                    -butyl-25,26,27,28-tetrapropoxy-23-[(triphenylmethyl)amino]calix[4]arene dichloromethane monosolvate"],"prefix":"10.1107","volume":"82","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-9968-7075","authenticated-orcid":true,"given":"Ivan","family":"Alekseev","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2017-517X","authenticated-orcid":true,"given":"Stanislav","family":"Bezzubov","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0146-765X","authenticated-orcid":true,"given":"Alexander","family":"Gorbunov","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4473-1107","authenticated-orcid":true,"given":"Vladimir","family":"Kovalev","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8629-1897","authenticated-orcid":true,"given":"Ivan","family":"Vatsouro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2026,1,1]]},"reference":[{"key":"wm5780_bb1","doi-asserted-by":"crossref","unstructured":"Asfari, Z., B\u00f6hmer, V., Harrowfield, J. & Vicens, J. 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