Reduction of tetraethyldiphenylstannole 3 with lithium afforded tetraethyldilithiostannole 2, and its considerable aromatic character was evaluated by X-ray diffraction analysis and theoretical calculations. Reaction of 2 with t-butyl chloride provided 1,1'-dilithiobistannole 4. This reaction mode is different from that of dilithiotetraphenylstannole 1 and is of considerable interest.