Two Series of CuII -Substituted Sandwich-Type Polyoxotungstates Constructed from Trivacant Germanotungstate Fragments

摘要

Under hydrothermal conditions, two families of new CuII - substituted sandwich-type germanotungstates (GTs): Cu6-GTs (enH2)2[Cu(en)2]2[Cu6(en)2(H2O)2(B-α-GeW9O34)2]·4H2O (1), H4[Cu (deta)(H2O)]2[Cu6(en)2(H2O)2(B-GeW9O34)2]·8H2O (2), [Cu(en) (H2O)2]2[Cu(en)2]2[Cu6(en)2(H2O)2(B-α-GeW9O34)2]·8H2O (3) (en= ethylenediamine, deta=diethylenetriamine) and Cu4-GTs H4[Cu (H2O)4]2[Cu(H2O)5]2[Cu4(H2O)2(B-α-GeW9O34)2]·8H2O (4), H10[Cu (H2O)3(Cl)]2[Cu4(B-α-GeW9O34)2]·8H2O (5), H8[Na(H2O)4]2[Cu (H2O)3(Cl)]2[Cu4(B-α-GeW9O34)2]·8H2O (6) have been made and characterized. Single-crystal structural analyses indicate that 1- 3 contain a belt-like hexa-CuII substituted sandwich-type [Cu6(en)2(H2O)2(B-α-GeW9O34)2] 8+ unit.