Crystal Engineering of Polyoxomolybdate‐Surfactant Hybrid Crystals by Using a Molecularly Distinct Precursor

ABSTRACT Crystal engineering of polyoxomolybdate‐surfactant hybrid crystals has been realized by using molecularly distinct octamolybdate ([Mo 8 O 26 ] 4– , Mo 8 ) isomers. The isomerization of Mo 8 anions can be utilized to introduce metal cations into the Mo 8 ‐surfactant hybrid crystals. Here, we have successfully isolated the hybrid crystals containing coordination‐unsaturated γ‐type Mo 8 isomer, which can behave as a molecular precursor to obtain several Mo 8 ‐surfactant hybrid crystals. Rubidium cation can be effectively incorporated into the Mo 8 ‐surfactant hybrid crystal lattices in several systems, which may have a possibility as metal‐ion capturing materials.