Decisive Interactions between the Heterocyclic Moiety and the Cluster Observed in Polyoxometalate-Surfactant Hybrid Crystals

Inorganic-organic hybrid crystals were successfully obtained as single crystals by using polyoxotungstate anion and cationic dodecylpyridazinium (C(12)pda) and dodecylpyridinium (C(12)py) surfactants. The decatungstate (W(10)) anion was used as the inorganic component, and the crystal structures were compared. In the crystal comprising C(12)pda (C(12)pda-W(10)), the heterocyclic moiety directly interacted with W(10), which contributed to a build-up of the crystal structure. On the other hand, the crystal consisting of C(12)py (C(12)py-W(10)) had similar crystal packing and molecular arrangement to those in the W(10) crystal hybridized with other pyridinium surfactants. These results indicate the significance of the heterocyclic moiety of the surfactant to construct hybrid crystals with polyoxometalate anions.