Project supported by the Natural Science Foundation of Shaanxi Province (No. 2003B01) and the Education Commission of Shaanxi Province (Nos. 03JK077, 03JS006).
The imidazole covalently coordinated sandwich-type heteropolymngstates Na9[ {Na(H=O2}3{M(C3H4N2)}3( Sb W9O33)2]·xH=O(M=Ni^Ⅱ, Co^Ⅱ, Zn^Ⅱ, Mn^Ⅱ) were obtained by the reaction of Na2WO4·2H2O, SbCl3·6H2O, Ni...
Project supported by the Natural Science Foundation of Shaanxi Province (No. 2003B01) and the Education Commission of Shaanxi Province (Nos. 03JK077 and 03JS006).
The pyridine coordinated sandwich-type heteropolytungstate Na7[Ni(H2O)6] { [Na(H2O)2]3[Ni(C5H5N)]3(AsW9O33)2}·28H2O was obtained by the reaction of Na2WO4·2H2O, NaAsO2 and pyridine with NiCl2·6H2O at pH =7....