Heteronuclear Complexes Containing CuCo(CO)4 Structural Units and Nitrogen Ligands

“Semibridging” CO groups characterize complexes 1–3, all of which are ultimately formed from CuCl and Na[Co(CO)4] in the presence of increasing concentrations of ammonia. The structure of the Cu2Co2 complex 2 is shown on the right; the arrows indicate which bonds are cleaved by NH3 to form 3. Analogous cleavage of 1 results in formation of 2.