Salt-like Structures of Oligomeric Gold Complexes and Polyoxometalates

By cleaving large gold clusters, dimeric and trimeric cationic gold complexes were generated and combined with polyoxometalates to form salt-like intercluster compounds. Four of them comprise binuclear gold complexes [Au(2)(dppx)(2)](2+) with dppx = Ph(2)P(CH(2))(n)PPh(2) with n = 1-3. Short chain lengths with n = 1 and 2, respectively, either enforce, or allow for short gold-gold distances. With n = 3 the gold atoms are kept at distances not allowing significant metallophilic interactions. The overall packing of these compounds can be related to the anti-As(2)O(3), CsCl, anti-CaCl(2) type. (nBu(4)N)(2)[Au(3)dppm(2)Cl(2)][PW(12)O(40)] contains a trinuclear gold complex and realizes a distorted Li(3)Bi-type of topology.