Metal ion exchange in dinuclear macrocyclic complexes identified by electrospray mass spectrometry

Dicopper(I) complexes of a two-compartment 34-membered bis-dithiadiimine macrocycle (1) in solution in the presence of silver(I) ion display in electrospray mass spectrometry experiments the presence of AgCu(1)2+ and Ag2(1)2+ in addition to the original Cu2(1)2+, consistent with metal ion exchange in this helical complex occurring without fragmentation.National Council for Scientific ResearchSupport from the Australian Research Council and the Scientific and Technical Research Council of Turkey is gratefully acknowledged