CsMn2P2, ein Mangan(II,III)‐phosphid mit der BaZn2P2‐Struktur. Mit einem Beitrag zum BaAl4‐Strukturtyp

CsMn₂P₂, a Manganese(II, III) Phosphide with BaZn₂P₂ Structure. With a Contribution to the BaAl₄ Structure Type CsMn₂P2₂is formed by the reaction of Cs₄P₆ with Mn and red phosphorus (Nb ampoule; 1073 K) as black platelets. The compound is paramagnetic following the Curie‐Weiss law above 110 K (μ = 4.81 B.M. / CsMn₂P₂; θ = —79 K) and orders antiferromagnetically below 110 K. The magnetic moment corresponds with the ratio Mn^II : Mn^III = 1:1. CsMn₂P₂ is isotypic with BaZn₂P₂ (tI10; I4/mmm; a = 4.098(1) Å, c = 14.215(4) Å, d(Mn—P) = 2.387(1) Å (4×), d(Cs—P) = 3.718(2) Å (8×)), and shows, therefore, no P—P‐bonds. The different regions of the BaAl₄ (ThCr₂Si₂) structure type are analysed and parameterized once more.