Self-assembly of M4L4 tetrahedral cages incorporating pendant P
S and P
Se functionalised ligands†
Abstract
Herein, the synthesis of metal–organic tetrahedral cages featuring flexible thio- and selenophosphate-based ligands is described. The cages were prepared by sub-component self-assembly of AP(OC6H4NH2-4)3 (A = S, Se) or S
P(SC6H4NH2-4)3, 2-pyridinecarboxaldehyde, and either Fe[BF4]2 or Co[BF4]2. Preliminary host–guest studies into the ability of the pendant P
S and P
Se groups to interact with suitable substrates will be discussed.