Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland.
Molecules. 2020 Jul 10;25(14):3162. doi: 10.3390/molecules25143162.
The preparation and characterization of 4'-(4--octyloxyphenyl)-3,2':6',3″-terpyridine () and 4'-(4--nonyloxyphenyl)-3,2':6',3″-terpyridine () are reported. The single crystal structures of 4'-(4--hexyloxyphenyl)-3,2':6',3″-terpyridine (), 4'-(4--heptyloxyphenyl)-3,2':6',3″-terpyridine (), and compounds and have been determined. The conformation of the 3,2':6',3″-tpy unit is , in and , but switches to , in and . This is associated with significant changes in the packing interactions with a more dominant role for van der Waals interactions between adjacent -alkyloxy chains and C-H... π interactions in and . The solid-state structures of and with the -hexyloxy and -heptyloxy chains feature interwoven sheets of supramolecular assemblies of molecules, with pairs of -alkyloxy chains threaded through cavities in an adjacent sheet.
报道了 4'-(4--辛氧基苯基)-3,2':6',3″-三联吡啶()和 4'-(4--壬氧基苯基)-3,2':6',3″-三联吡啶()的制备和表征。确定了 4'-(4--己氧基苯基)-3,2':6',3″-三联吡啶()、4'-(4--庚氧基苯基)-3,2':6',3″-三联吡啶()、化合物和的单晶结构。3,2':6',3″-tpy 单元的构象为 ，在和中，但在和中转换为 。这与包装相互作用发生了显著变化，相邻 -烷氧基链之间的范德华相互作用和 C-H…π相互作用在和中更为重要。具有 -己氧基和 -庚氧基链的和的固态结构具有分子超分子组装的交织片，一对 -烷氧基链穿过相邻片的腔。
