Hydrothermal syntheses and structures of three one-dimensional heteropolytungstates formed by Dawson or Keggin cluster units
Abstract
Single crystals of [Cu(en)2(OH2)]2[H2en][{Cu(en)2}P2CuW17O61]·5H2O 1, [Cu(en)2(OH2)]2[Cu(en)2]0.5[H2en]0.5[{Cu(en)2}P2CuW17O61]·5H2O 2 and [Co(dpa)2(OH2)2]2[Hdpa][PCoW11O39] 3 (dpa =