Heteroatomic polyanions of post-transition elements. Synthesis and structure of a salt containing the novel hybrid hepta-arsenic tetraselenate(1–) anion, As7Se4–
Abstract
Rduction of As4Se4 by potassium in ethylenediamine in the presence of tetraphenylphosphonium bromide resulted in the formation of the compound P(C6H5)4·As7Se4 whose structure has been determined crystallographically.