Crystal structure of zinc iodide complex with carbamide, ZnI2 · 2CO(NH2)2

The structure of ZnI2 · 2CO(NH2)2 is determined by single-crystal X-ray diffraction. The crystals are monoclinic, a = 12.694(3) A, b = 6.886(2) A, c = 13.161(3) A, β = 110.58(2)°, Z = 4, space group P21/a, and R = 0.0337 for 2481 reflections. Similar to the chloride analogue, the structure consists of discrete molecules with tetrahedrally coordinated Zn atoms. The bond lengths and angles are as follows: Zn-I, 2.5749(8) and 2.5473(8) A; Zn-O, 1.954(3) and 1.985(4) A; IZnI, 113.74(3)°; OZnO, 100.5(2)°; and IZnO, 108.5°–113.1(1)°. The crystal structure agrees with the IR and electronic absorption spectra of the crystals.