Abstract
Many elusive polycarbon chalcogenides X(Cn)Y (X, Y: O, S; n≥2) having both odd and even-numbered carbon atoms can easily be generated and characterized in the gas phase by electron transfer processes using the technique of neutralization-reionization mass spectrometry (NRMS). Collision-induced dissociations serve as a powerful means to unambiguously assign the connectivities of these cumulene molecules, many of which do also exist as stable radical cations and anions. The reported “instability” of most polycarbon chalcogenides in solution or in a matrix does not reflect an intrinsic property of these molecules; rather it points to facile intermolecular reactions.
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