Christian Reisner and Wolfgang Tremel
[Cr(en)3][Te6] (en = ethylenediamine) is obtained by a template synthesis under solvothermal conditions from Cr(CO)6 and BaTe4; its crystal structure contains a polymeric Te63- framework whose pores contain the Cr(en)33+ template; [Cr(en)3][Te6] is the first chalcogenide with a porous three-dimensional framework structure.