Self-assembly of metallosupramolecular rhombi from chiral concave 9,9'-spirobifluorene-derived bis(pyridine) ligands
Hovorka, R., Hytteballe, S., Piehler, T., Meyer-Eppler, G., Topic, F., Rissanen, K., Engeser, M., & Lützen, A. (2014). Self-assembly of metallosupramolecular rhombi from chiral concave 9,9'-spirobifluorene-derived bis(pyridine) ligands. Beilstein Journal of Organic Chemistry, 10(Feb 18), 432-441. https://doi.org/10.3762/bjoc.10.40
Julkaistu sarjassa
Beilstein Journal of Organic ChemistryTekijät
Päivämäärä
2014Tekijänoikeudet
© the Authors, 2014.
Two new 9,9’-spirobifluorene-based bis(4-pyridines) were synthesised in enantiopure and one also in racemic form. These ligands act as concave templates and form metallosupramolecular [(dppp)₂M₂L₂] rhombi with cis-protected [(dppp)Pd]²⁺ and [(dppp)Pt]²⁺ ions. The self-assembly process of the racemic ligand preferably occurs in a narcissistic self-recognising manner. Hence, a mixture of all three possible stereoisomers [(dppp)₂M₂{(R)-L}₂](OTf)₄, [(dppp)₂M₂{(S)-L}2](OTf)₄, and [(dppp)₂M₂{(R)-L}{(S)-L}](OTf)₄ was obtained in an approximate 1.5:1.5:1 ratio which corresponds to an amplification of the homochiral assemblies by a factor of approximately three as evidenced by NMR spectroscopy and mass spectrometry. The racemic homochiral assemblies could also be characterised by single crystal X-ray diffraction.
Julkaisija
Beilstein - Institut zur Foerderung der Chemischen WissenschaftenISSN Hae Julkaisufoorumista
1860-5397Asiasanat
Alkuperäislähde
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3943293/Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/23617788
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