Intensity data werecorrected for Lorentz and polarization effects as well as formulti-scan absorption. No hydrogen atoms associated withthe water molecules were located from the differenceFourier map. Positions of the hydrogen atoms attached tothe carbon and nitrogen atoms were geometrically placed.All hydrogen atoms were refined isotropically as a ridingmode using the default SHELXTL parameters. In the finalrefinement, the contributions of the disordered solvent tothe structure factors in compound 1–5 were removed withthe SQUEEZE program [37]