Crystal Structures and Hydrogen Bonding of Two Complexes containing the [Ammine‐chlorido‐ethylenediamine‐bis(pyridine)cobalt(III)]²⁺ Cation

Abstract

The crystal structures of two classical cobalt(III) complexes comprising the [CoCl(NH 3 )(en)(py) 2 ] 2+ cation were determined by single-crystal X-ray diffraction. Both complexes, dark red [CoCl(NH 3 )(en)(py) 2 ]Cl 2 ·H 2 O (1) and purple [CoCl(NH 3 )-(en)(py) 2 ][HgCl 4 ]·1.125H 2 O (2), crystallize in the triclinic space group P1. In both compounds, the Co atom exhibits a typical octahedral coordination and the configuration index of the complex is OC-6-43. In