Switching the Conformation of 3,2':6',3''-tpy Domains in 4'-(4-n-Alkyloxyphenyl)-3,2':6',3''-Terpyridines
| Main Authors: | Rocco, Dalila, Prescimone, Alessandro, Constable, Edwin C., Housecroft, Catherine E. |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 2020
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| Online Access: |
https://zenodo.org/record/6513479 |
Daftar Isi:
- The preparation and characterization of 4'-(4-n-octyloxyphenyl)-3,2':6',3''-terpyridine (8) and 4'-(4-n-nonyloxyphenyl)-3,2':6',3''-terpyridine (9) are reported. The single crystal structures of 4'-(4-n-hexyloxyphenyl)-3,2':6',3''-terpyridine (6), 4'-(4-n-heptyloxyphenyl)-3,2':6',3''-terpyridine (7), and compounds 8 and 9 have been determined. The conformation of the 3,2':6',3''-tpy unit is trans,trans in 6 and 7, but switches to cis,trans in 8 and 9. This is associated with significant changes in the packing interactions with a more dominant role for van der Waals interactions between adjacent n-alkyloxy chains and C–Hmethylene... interactions in 8 and 9. The solid-state structures of 6 and 7 with the n-hexyloxy and n-heptyloxy chains feature interwoven sheets of supramolecular assemblies of molecules, with pairs of n-alkyloxy chains threaded through cavities in an adjacent sheet