TY  - JOUR
A1  - Wise, Matthew D.
A1  - Holstein, Julian J.
A1  - Pattison, Philip
A1  - Besnard, Celine
A1  - Solari, Euro
A1  - Scopelliti, Rosario
A1  - Bricogne, Gerard
A1  - Severin, Kay
T1  - Large, heterometallic coordination cages based on ditopic metallo-ligands with 3-pyridyl donor groups
Y1  - 2014
JF  - Chem. Sci.
DO  - 10.1039/C4SC03046J
DO  - 10.23689/fidgeo-2532
N2  - Ditopic N-donor ligands with terminal 4-pyridyl groups are omnipresent in coordination-based selfassembly. The utilization of ligands with 3-pyridyl donor groups is significantly less common, because the intrinsic conformational flexibility of these ligands tends to favor the formation of small aggregates. Here, we show that large Pd6L12 12+ cages can be obtained by reaction of Pd(II) salts with metallo-ligands L bearing terminal 3-pyridyl groups. The easy-to-access metallo-ligands contain an Fe(II) clathrochelate core. These sterically demanding clathrochelate complexes prevent the formation of smaller aggregates, which is observed for less bulky analogous building blocks. The cages were shown to bind BF4 and BPh4 anions in aqueous solvent mixtures, whilst the lateral size of the clathrochelate significantly affects their guest encapsulation behavior.
UR  - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/6845
ER  -