Structure of an Organometallic Intercalate: Single Crystal X‐Ray and Powder Neutron Diffraction Study of [SnS2{Co(η‐C5H5)2}0.31] and [SnS2{Co(η‐C5D5)2}0.31]

Layer compounds can change from semiconductors to superconductors by intercalation of metallocenes such as [Co(η5-C5H5)2]. However, the molecular structure of these interesting materials was hitherto unclear. Are the Cp planes of the organometal compound arranged perpendicular or parallel to the layers of the host lattice (see picture on the right)? In the title compound parallel, at least according to comprehensive structure investigations.