Structural and magnetic properties of an asymmetric dicopper(II) anticancer drug analogue

Abstract

The single-crystal X-ray structure and variable temperature magnetic properties of the novel dicopper(II) anticancer drug analogue [{Cu2(HL)(H2PO4)2}2][NO3]2.2H2O [H2L = bis(pyridine-2-aldehyde) thiocarbohydrazone] is determined; the complex shows a dimer of dimeric (Cu2(HL)}3+ units with dihydrogenphosphato and sulfur bridges between the inequivalent Cu(II) centres, resulting in three antiferromagnetic exchange interactions: a dominant intradimer J of -109 to -116 cm-1, and two weaker interdimer interactions.