Chemistry Letters, Vol.48, No.12, 1522-1525, 2019
Ketone-hybridized Cyclic Water Hexamer with Chair-conformation in Crystal of Macrocyclic peri-Aroylnaphthalene Compound
The titled macrocyclic arene ether ketone compound affords peculiarly organized crystals of dimeric molecular aggregated motif including exquisitely aligned water molecules. In the crystal, four water molecules are incorporated into the cavity between two macrocyclic molecules forming chair-formed ketone-hybridized cyclic water hexamer with two ketonic oxygen atoms of the dimerized macrocyclic molecules. The hydrogens of the water molecules situated outside of the hexamer connect with the remaining ketonic carbonyl oxygens in the dimerized macrocyclic molecules and all six oxygens of the hexamer bind to other macrocyclic molecules at the periphery, forming several kinds of effective hydrogen bonding loop networks.