The Delta isomer of(C6H5CO2)(3)Sb crystallizes rhombohedrally (hexagon
al axes) in the space group R3 with a = 1944.0 pm, c = 422.3 pm, and Z
= 3. The molecules are stacked parallel to 001; Sb has a coordination
number of 3 + 3 (Sb-O:208 and 256 pm, resp.).