Secondary bonding. Part 4. The crystal and molecular structure of µ-oxo-bis[nitrato(phenyl)iodine(III)]

Abstract

The crystal and molecular structure of the title compound has been determined from diffractometer data by the heavy-atom method. The crystals (α-form) are monoclinic, space group Cc, with unit-cell dimensions a= 16.145(9), b= 7.067(7), c= 15.058(18)Å, β= 108.72(8)°, Z= 4, from 1 337 observed reflections, R= 0.063. The oxygen-bridged molecular structure is confirmed with average dimensions I–O(bridge) 2.00(5), I–O(NO₃) 2.32(3)Å, I–O–I 123.7(6)°, and I–C 2.05(2)Å. The primary geometry around each iodine is T-shaped, but two secondary I ⋯ O bonds [3.01 (2)Å] convert this into a pentagonal plane.