An M2L4 molecular capsule with an anthracene shell: encapsulation of large guests up to 1 nm

J Am Chem Soc. 2011 Aug 3;133(30):11438-41. doi: 10.1021/ja2037029. Epub 2011 Jul 8.


A new M(2)L(4) molecular capsule with an aromatic shell was prepared using two Pd(II) ions and four bisanthracene ligands. The self-assembled capsule possesses a cavity with a diameter of ~1 nm that can encapsulate medium-sized spherical and planar molecules as well as a very large molecule (C(60)) in quantitative yields. The encapsulated guests are fully segregated and shielded from the external environment by the large anthracene panels.