Polyoxomolybdate–Surfactant Hybrid Layered Crystal with Unusually Long Periodicity

An inoranic–organic hybrid crystal was synthesized by using polyoxomolybdate and hexadecylpyridinium surfactant. The unit cell was monoclinic having quite a long cell dimension (b = 75.0111(14) Å). The crystal structure was formed by alternative stacking of β-octamolybdate bilayers and interdigitated hexadecylpyridinium bilayers with layered periodicity of 3.75 nm, which is the largest value for polyoxometalate–surfactant hybrid crystals.