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Dostęp zamkniętyHighly quadrupolar derivatives of the [closo-B10H10]2- anion: Investigation of liquid crystalline polymorphism in an homologous series of 1,10-bis(4-alkoxypyridinium) zwitterions
| dc.abstract.en | A series of pyridinium bis-zwitterions [closo-B10H8-1,10-2 (4-ROC5H4N)] (1[n]) was obtained in 55–60% yield by reacting [closo-B10H8-1,10-2(IPh)] (3) with 4-alkoxypyridines and the resulting derivatives were analyzed for their liquid crystalline properties. Optical, thermal and XRD analyses revealed the formation of a nematic and rare lamellar phases, LamCr, driven by dipolar interactions. Upon elongation of the terminal alkoxy chain, the nematic phase is gradually replaced by the lamellar polymorphism. The solid-state structures of 1[8], 1[12] and 1[16] were established by single crystal XRD: 1[8] P21/c, Z = 4, a = 12.6009 (2) Å, b = 20.7889 (2) Å, c = 12.61150 (10) Å, β = 103.9910 (10)°; 1[12] P-1, Z = 2, a = 9.6262 (2) Å, b = 12.0464 (2) Å, c = 17.9226 (3) Å, α = 80.5940 (10)°, β = 83.0700 (10)°, γ = 74.9860 (10)°; 1[16] P-1, Z = 2, a = 9.6827 (3) Å, b = 11.6711 (5) Å, c = 22.8486 (7) Å, α = 77.416 (3)°, β = 86.925 (2)°, γ = 66.202 (4)°. © 2018 Elsevier B.V. |
| dc.affiliation | Uniwersytet Warszawski |
| dc.contributor.author | Friedli, Andrienne C. |
| dc.contributor.author | Wojciechowski, Jakub |
| dc.contributor.author | Novozhilova, Irina |
| dc.contributor.author | Ali, Muhammad O. |
| dc.contributor.author | Kaszyński, Piotr |
| dc.contributor.author | Pociecha, Damian |
| dc.date.accessioned | 2024-01-25T03:11:37Z |
| dc.date.available | 2024-01-25T03:11:37Z |
| dc.date.issued | 2018 |
| dc.description.finance | Nie dotyczy |
| dc.description.volume | 865 |
| dc.identifier.doi | 10.1016/J.JORGANCHEM.2018.04.003 |
| dc.identifier.issn | 0022-328X |
| dc.identifier.uri | https://repozytorium.uw.edu.pl//handle/item/108480 |
| dc.language | eng |
| dc.pbn.affiliation | chemical sciences |
| dc.relation.ispartof | Journal of Organometallic Chemistry |
| dc.relation.pages | 226 - 233 |
| dc.rights | ClosedAccess |
| dc.sciencecloud | nosend |
| dc.subject.en | Boron clusters |
| dc.subject.en | Liquid crystals |
| dc.subject.en | Synthesis |
| dc.subject.en | XRD |
| dc.title | Highly quadrupolar derivatives of the [closo-B10H10]2- anion: Investigation of liquid crystalline polymorphism in an homologous series of 1,10-bis(4-alkoxypyridinium) zwitterions |
| dc.type | JournalArticle |
| dspace.entity.type | Publication |