Hovorka Rainer, Meyer-Eppler Georg, Piehler Torsten, Hytteballe Sophie, Engeser Marianne, Topić Filip, Rissanen Kari, Lützen Arne
Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1 53121 Bonn (Germany), Fax: (+49) 228-73-9608.
Chemistry. 2014 Oct 6;20(41):13253-8. doi: 10.1002/chem.201403414. Epub 2014 Aug 25.
Two enantiomerically pure 9,9'-spirobifluorene-based bis(pyridine) ligands 1 and 2 were prepared to study their self-assembly behavior upon coordination to cis-protected palladium(II) ions. Whereas the sterically more demanding ligand, 2, gave rise to the expected dinuclear metallosupramolecular M2L2 rhombi, the sterically less demanding ligand, 1, acts as a template to give rise to a homochiral metallosupramolecular M4L4 catenane.
制备了两种对映体纯的基于9,9'-螺二芴的双（吡啶）配体1和2，以研究它们与顺式保护的钯（II）离子配位后的自组装行为。空间位阻较大的配体2形成了预期的双核金属超分子M2L2菱形，而空间位阻较小的配体1则作为模板形成了一种手性金属超分子M4L4索烃。
