Structural Features of Pentaphenylantimony, Penta(p-tolyl)antimony, and Their Solvates with Organic Solvents.

The structures of pentaphenylantimony (I), its solvates with benzene (II) and dioxane (III), and penta(p-tolyl)antimony (IV) are solved by X-ray diffraction (XRD) (CIF files CCDC nos. 2124594, 2121835, 2124972, and 2124962, respectively). The following parameters are determined from the XRD data: crystals of Ph5Sb (I): a = 10.286(3), b = 10.510(4), c = 13.590(4) Å; α = 68.29(2)°, β = 79.364(14)°, γ = 61.272(12)°; V = 1196.9(7) Å3; Z = 2; solvate Ph5Sb∙0.5PhH (II): a = 13.165(11), b = 14.394(16), c = 15.193(13) Å; α = 90.22(3)°, β = 113.71(2)°, γ = 94.23(5)°; V = 2627(4) Å3; Z = 2; solvate Ph5Sb∙0.5С4H8O2 (III): a = 10.451(5), b = 10.462(4), c = 13.323(5) Å; α = 75.647(11)°, β = 69.648(19)°, γ = 86.300(19)°; V = 1322.8(9) Å3; Z = 2; and p-Tol5Sb (IV): b = 12.084(7), c = 17.009(6) Å; β = 102.934(14)°; V = 2899(2) Å3; Z = 4. The antimony atoms in solvates II and III have a distorted trigonal bipyramidal coordination. [ABSTRACT FROM AUTHOR]