Unprecedented interweaving of single-helical and unequal double-helical chains into chiral metal-organic open frameworks with multiwalled tubular structures.

Two novel chiral metal-organic open frameworks with unprecedented multiwalled tubular channels and interweaving of single-helical and unequal double-helical units were reported, which possess novel four-connected 4(2)8(3)10 topology and represent the first examples of functional metal-organic frameworks based on both flexible tripodal and flexible bisdentate ligands.