Polyimido Uranium(IV) Clusters: Imidometalates with an M7(μ3‐N)6(μ2‐N)6 Core Analogous to the Anderson‐Type Polyoxometalate Motif

NU clusters: Novel imido uranium(IV) clusters involving four or seven metal centers have been obtained from the reaction of UCl4 and [{PhNMg(thf)}6] in thf or pyridine (see core structure; U yellow, N purple, Cl green, O red). The aggregation is strongly dependent on the nature of the solvent.