Interpretation of the Magnetic Properties of a Compound Consisting of Cocrystallized Cu^II₃ and Cu^II₄ Clusters through the Targeted Synthesis and Study of Its Discrete Cu^II₄ Component

The use of the binary “blend” of MeCO₂⁻/pdmH₂ ligands (pdmH₂ = pyridine-2,6-dimethanol) in copper(II) chemistry has provided access to a compound consisting of discrete linear Cu^II₃ and cubane Cu^II₄ clusters. The complicated magnetic behavior of the Cu^II₃ + Cu^II₄ complex was clarified and interpreted through the designed synthesis of the individual Cu^II₄ component; a unique 1D (Cu^II₅)_n compound containing a Cu^II₃ subunit, which is structurally similar to the trinuclear cluster in the Cu^II₃ + Cu^II₄ compound, was also isolated and structurally characterized.