Synthesis, structure and electrochemistry of CO incorporated diruthenium metallacyclic compounds [Ru2(CO)6{μ-η1:η1:η2:η2-1,4-Fc2C5H2O}] and [Ru2(CO)6{μ-η1:η1:η2:η2-1,5-Fc2C5H2O}]

Ferrocenyl substituted ruthenium metallacyclic compounds, [Ru2(CO)6{μ-η1:η1:η2:η2-1,4-Fc2C5H2O}] (1) and [Ru2(CO)6{μ-η1:η1:η2:η2-1,5-Fc2C5H2O}] (2) have been synthesized and structurally characterized. Electrochemical studies for 1 and 2 and the respective quinone derivatives 3 and 4 show weak to no electrochemical coupling at the mixed-valent intermediate state which is dependent on the complex frameworks.