1 Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China. [email protected].
Enantiopure A4L4 tetrahedral cages (either ΔΔΔΔ or ΛΛΛΛ) were obtained through the anion-coordination-driven assembly (ACDA) of phosphate anions with C3-symmetric tris-bis(urea) ligands bearing chiral groups.