The new intermetallic compounds Ca11Sb10 and Ca11Bi10 crystallize tetragonal in the Yb11Sb10-structure type. There are 4-membered Sb(Bi)-rings, Sb2(Bi2)-dumb-bells and isolated Sb(Bi)atoms in the structure

Die bisher unbekannte Verbindung CaSb2 wurde dargestellt, analytisch gesichert und ihre Struktur an Einkristallen bestimmt (a = 4,746(10), b = 4,177(10), c = 9,084(10) Å, β = 106,3(1)°, Raumgruppe P21/m, z = 2). Auffallendes Strukturmerkmal sind SbSb‐Zickzackketten (SbSb = 2,92 Å und 2,94 Å); die Verbindung ist zu den Zintl‐Phasen zu rechnen.

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The new intermetallic compound Sr3As4 has been prepared and structurally characterized by X-ray single crystal methods. Sr3As4 crystallizes orthorhombic with a = 1484 ± 2 pm, b = 1789 ± 2 pm, c = 597 ± 1 pm, space group Fdd2. Remarkable element of the structure are As4-chains.

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