The first example of a crystalline guest-free form of the tris(5-acetyl-3-thienyl)methane (TATM) host material

The first example of a guest-free crystalline form of tris(5-acetyl-3-thienyl)methane (TATM), in both powder and single crystal form, was obtained by leaching water-soluble guests out of the guest–host inclusion compounds with acetone, ethanol and methanol.