A novel chiral polyoxometalate（POM）, {[Na（Arg）2]NaH}[AIMo6（OH）6O18].6H2O（1,Arg=L-arginine）has been synthesized by the reaction between Na3[A1Mo6（OH）6O18].8H2O and Arg in aqueous solution and was structu- rally characterized by single-crystal X-ray diffraction, elemental analyses and UV-Vis spectrometry. Compound 1 was an example of Arg based Anderson-type complex. Photocatalytic analysis indicates that compound 1 presents cata- lytic activity for photodegradation of rhodamine-B（RhB） under UV irradiation.
