Reactivity of a C,N-chelated stannylene with chalcogens.

The stannylene {2-[(CH3)2NCH2]C6H4}2Sn (1) was reacted with oxygen, sulfur, selenium, tellurium, and carbon disulfide. The reactions with heavier chalcogens led to the rapid formation of 1:1 dinuclear adducts which were characterized by elemental analysis, ESI-MS measurements, 1H NMR spectroscopy, and structurally characterized by X-ray diffraction (in the case of reaction products with S8 (3) and Te (5)). The reaction of 1 with carbon disulfide and elemental sulfur yields the remarkable compound {{2-[(CH3)2NCH2]2C6H4}Sn}2(μ2-S2C＝CS2) (3a). The stability and reactivity of compounds 1–5 were rationalized at DFT/TZ2P level. [Copyright &y& Elsevier]