Two 1-D Krebs-type heteropolyoxotungstates based on [X2W21O72Na(OH)2]13 − (X = SbIII, BiIII) units

Two 1-D Krebs-type heteropolyoxometalates constructed from Krebs-type [X2W21NaO72(OH)2]13 − fragments connected by four W-O-W connectors were synthesized and characterized.260