Comparison of [Pd 2 L 4 ][BF 4 ] 4 cages for binding of n -octyl glycosides and nitrate (L = isophthalamide or dipicolinamide linked dipyridyl ligand)

Two dipyridyl ligands were synthesized, where the pyridyl donor fragments were separated by an isophthalamide (1) or a dipicolinamide moiety (2). Both ligands formed [Pd2(Ligand)4][BF4]4 complexes in CD2Cl2 containing 5% dmso-d6. It was found that while [Pd2(1)4][BF4]4 readily binds to n-octyl glyco...

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Veröffentlicht in:Organic & biomolecular chemistry 2021-08, Vol.19 (30), p.6633-6637
Hauptverfasser: Timmer, Brian J J, Bobylev, Eduard O, Mooibroek, Tiddo J
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Sprache:eng
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Zusammenfassung:Two dipyridyl ligands were synthesized, where the pyridyl donor fragments were separated by an isophthalamide (1) or a dipicolinamide moiety (2). Both ligands formed [Pd2(Ligand)4][BF4]4 complexes in CD2Cl2 containing 5% dmso-d6. It was found that while [Pd2(1)4][BF4]4 readily binds to n-octyl glycosides and to nitrate anions, [Pd2(2)4][BF4]4 did not. The difference in binding properties could be rationalized based on the reduced flexibility and size of the [Pd2(2)4]2+ cage and/or stronger interior binding of a BF4- counter anion.
ISSN:1477-0520
1477-0539
DOI:10.1039/D1OB01185E