The
new bimetallic coordination compounds [LNiAg(NO3)], [LCuMn(NO3)2], [LCuCu(NO3)2], [LCuZn(NO3)2], and [{LCuBi(NO3)3}(ACN)]
have been synthesized from a salen-type
ligand L containing two distinct coordination sites to accommodate
(different) metal ions M1 and M2. In the solid state, the formation
of 1:1 compounds (LCu:M2) is always observed, but interactions between
the compounds lead to differences in packing. For example, a head-to-tail
arrangement along the crystallographic b-axis is
observed in the case of the LCuBi compound, and the LNiAg compound
is polymeric, while its Cu homologue LCuAg forms a discrete dimer.
Given the inherent potential of the preorganizing, two metal ions
using L could be used to synthesize nanoscale copper–bismuth
and −manganese mixed metal oxides as a function of the temperature.
The combination of different bioactive metal ions within one ligand
system was furthermore explored for antimicrobial efficiency.