We present the synthesis and characterization of the firsttrisila‐bridged ansa half‐sandwich complexes of Group 6 transition metals in a one‐step synthesis from dilithiatedprecursors Li[M(η5‐C5H4Li)(CO)3] (M = W, Mo) by use ofstoichiometric amounts of Si3Me6Cl2 under dilute conditions. Variation of the reaction conditions leads to dinuclear trisila‐bridged half‐sandwich complexes, which were also characterized.