Self-assembly of polyoxometalate clusters and metal–organic coordination fragments into 1D homochiral chains

A pair of enantiomerically pure polyoxometalates, (C4NH7O4)[Na2(l-C4H8N2O3)2(H2O)9Zn]2[CrMo6H6O24]2 · 7H2O (l-1), and (C4NH7O4)[Na2(d-C4H8N2O3)2(H2O)9Zn]2[CrMo6H6O24]2 · 7H2O (d-1), have been synthesized for the first time and characterized by elemental analyses, IR, TG, UV and single crystal X-ray diffraction. l-1 and d-1 are enantiomers and crystallize in the chiral space group P21212. To our best knowledge, they represent the first examples of 1D homochiral polyoxometalate compounds constructed from Anderson-type polyoxoanions.