Abstract
New supramolecular hybrid assemblies have been selectively prepared starting off with stoichiometric mixtures of pyridine-tagged Zn(salphen) and non-metalated porphyrin ligands in the presence of suitable metal acetates. This one-pot procedure leads to in situ transmetalation of the salen unit, metalation of the porphyrin ligand by the released Zn(OAc) 2 and subsequent heterometallic assembly formation between the metallosalen and metalloporphyrin components via Zn–N pyr coordination motifs. The reactions were followed by NMR spectroscopy and MALDI-TOF mass spectrometry, and for one of the Zn(salphen) building blocks the X-ray molecular structure is reported.
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