Professor Ulrich Mu È ller zum 60. Geburtstag gewidmet.Inhaltsu È bersicht. Cs 3 Sb 7 und Cs 4 Sb 2 wurden aus den Elementen dargestellt und ihre Kristallstrukturen auf der Basis von Ro È ntgeneinkristalldaten ermittelt. Cs 3 Sb 7 kristallisiert monoklin in der Raumgruppe P2 1 /c (a = 1605.7(1) pm, b = 1571.1(1) pm, c = 2793.9(2) pm, b = 96.300(2)°, Z = 16) und entha È lt Anionen Sb 7 3± . In der Kristallstruktur von Cs 4 Sb 2 (orthorhombisch, Raumgruppe Pnma, a = 1598.5(3) pm, b = 631.9(2) pm, c = 1099.5(2) pm, Z = 4) liegen Hanteln Sb 2 4± vor.Abstract. Cs 3 Sb 7 and Cs 4 Sb 2 were synthesized from the elements and their crystal structures were determined on the basis of single crystal x-ray data. Cs 3 Sb 7 crystallizes in the monoclinic system with space group P2 1 /c (a = 1605.7(1) pm, b = 1571.1(1) pm, c = 2793.9(2) pm, b = 96.300(2)°, Z = 16) and contains anions Sb 7 3± . In the structure of Cs 4 Sb 2 (ortho-rhombic, space group Pnma, a = 1598.5(3) pm, b = 631.9(2) pm, c = 1099.5(2) pm, Z = 4) dumbbells Sb 2 4± are present.