6533b7ddfe1ef96bd1274aec

RESEARCH PRODUCT

A New Structural Motif for an Enantiomerically Pure Metallosupramolecular Pd4L8Aggregate by Anion Templating

Christoph KleinFilip TopićMaximilian BognerChristoph GützKari RissanenArne Lützen

subject

chemistry.chemical_classificationTetrafluoroborateLigandStereochemistryAggregate (data warehouse)chemistry.chemical_elementGeneral ChemistryCatalysisIonCrystallographychemistry.chemical_compoundchemistrySelf-assemblyCounterionStructural motifta116Palladium

description

An enantiomerically pure BINOL-based bis(3-pyridyl) ligand 1 assembles into a homochiral [Pd4(1)8] complex upon coordination to tetravalent PdII ions. The formation of this aggregate is templated by two tetrafluoroborate counterions that are encapsulated in two peripheral cavities. The resulting structure is a new structural motif for this kind of metallosupramolecular assemblies that arranges the palladium ions in a distorted tetrahedral fashion and forces ligand 1 to adopt two different conformations. Both phenomena are unique and cause an overall three-dimensional structure that has another confined, chiral, and hydrophilic central cavity.

https://doi.org/10.1002/anie.201400626