
The title compound, [Co(C6H18N4)2][Co(CO)4]2, comprises [Co(N4H18C6)2]2+ and [Co(CO)4]− ions. The cation presents a distorted-octahedral arrangement of N atoms around the CoII atom, while in the anion, four CO ligands are coordinated to the Co-I atom in an approximately tetrahedral distribution. The anions and cations are linked in the crystal structure via hydrogen bonds of the type CoII—X—H
OC—Co-I (X = N or C), in which both donor and acceptor groups are influenced by the coordination to a metal center.

Supporting information
![]() | Crystallographic Information File (CIF) |
![]() | Structure factor file (CIF format) |
CCDC reference: 130089