A tetranuclear pyrophosphate-bridged Cu(II) complex with 4,4′-bipyridine and 1,10-phenanthroline: Synthesis, structural, and magnetic properties

A new tetranuclear pyrophosphate-bridged Cu(II) complex has been hydrothermal synthesized. The analysis of the magnetic data in the whole temperature range allows the determination of the value of the intramolecular magnetic coupling (J = − 13.16 cm− 1).251