A novel two-dimensional structure containing the first antimony-substituted polyoxovandium clusters: [{Co(en) 2 } 2 Sb III 8 V IV 14 O 42 (H 2 O)]·6H 2 O

The novel framework [{Co(en)2}2SbIII8VIV14O42(H2O)]·6H2O is composed of two-dimensional arrays of {SbIII8VIV14O42(H2O)} clusters interlinked via {Co(en)2} bridging groups; such antimony–vanadium clusters with antimony and vanadium in low oxidation states were previously unknown.