Sr_(11)Ge_4N_6:a new nitride composed of [GeN_2Sr_7]~(4+) antiperovskite-type slabs and [Sr_4Ge]~(4+) layers,separated by sheets of bent [Ge~(II)N_2]~(4-) ions

摘要

The layered nitride Sr_(11)Ge_4N_6 contains Ge4 Zintl anions in both [Sr_4Ge]~(4+) layers and [GeN_2Sr_7]~(4+) antiperovskite-type slabs which are separated by sheets of bent [Ge~(II)Z_2]~(4-) ions;the observed range of formal germanium oxidation states in nitrides thus extends between +4 and -4.