Transformation of nortricyclane type cage compounds P4S3, P4Se3 and As4S3 by [Cp′′2Zr(CO)2]

Abstract

The complex [Cp′′₂Zr(CO)₂] (Cp′′ = C₅H₃tBu₂) was used to transform the nortricyclane type cage compounds E₄Q₃ (E = P, Q = S, Se; E = As, Q = S) resulting in unprecedented complexes [(Cp′′₂Zr)₂(μ,η^1:1:1:1-E₂Q₄)] possessing bridging ligands that represent the anions of the so far unknown tetrachalcogenohypodiphosphorous acid (HQ)₂PP(QH)₂ and tetrathiohypodiarsenous acid (HS)₂AsAs(SH)₂, respectively.