Abstract By in situ lithiation of the trifunctional amines H 3 CC (CH 2 NHSiMe 3) 3, PhC (CH 2 NHSiMe 3) 3, and HC {SiMe 2 NH (p-Tolyl)} 3 and subsequent reaction with SnCl 2 the corresponding triamidostannates were obtained. These were coupled with CpM (CO) 2 Cl (M [DOUBLE BOND] Fe, Ru) to yield the M—Sn-bonded heterobimetallics 9–14 of which H 3 CC (CH 2 NSiMe 3) 3 SnFe (CO) 2 Cp (9) was characterized by a single-crystal X-ray ...