Complex 13f (Fig. ) crystallized with one molecule in the asymmetric unit and exhibited an intermolecular interaction between oxygen and hydrogen (C-H•••O) of 2.61 Å. The crystal structure shows tight packing in 'stacks' parallel to the a-axis with weak H-bonding and no solvent (Fig. ), and dihedral angles between the dipyrrin plane and the substituents of 32 -66°. Both 13h (Fig. ) and 13i (Fig. ) showed significant rotational disorder because of the formation of atropisomers (rotation about the dipyrrin-aryl bond. The structure of 13h contained a partially occupied disordered hexane and showed dihedral angles between the dipyrrin plane and the substituents of 64-99°. The structure of 13i showed tightly packed molecules without solvate molecules. The naphthyl group was twisted by 74-98° from the dipyrrin plane. Compound 13j (Fig. ) crystallized with one molecule of the complex and three solvent sites in the asymmetric unit (Fig. ). The dihedral angle between the dipyrrin plane and the anthracene unit is between 88-92°.