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Figure 4.18
Possible applications of infi nite nucleobase-metal architectures
Figure 4.19
Scheme of the structure of the 1D coordination polymer obtained by coordina-
tion of Ag(I) entities to pyrimidinato ligands
4.3.1 1 D Coordination Polymers
Nucleobases as Bridging Ligands
With 1-methyluracil in its anionic form, the Aoki group prepared a silver-based
polymeric compound, coordinated through the carbonyl groups and the deproto-
nated N3 of the pyrimidinato ligands (Figure 4.19).
19
Beauchamp and coworkers
reported another similar example: the reaction of Ag(I) with 1-methylthymine leads
to the formation of the 1D coordination polymer via deprotonation of the nucleo-
base, which acts as a bridging ligand between two silver ions. Two different Ag(I)
ions are observed in the polymeric chain, one with linear coordination involving
two N3 donor atoms and one tetrahedral Ag(I) centre coordinated to two O2 and
two O4 atoms from four thymines.
20
With uracilato as ligand, the Lippert group isolated a heteronuclear Pt/Ag
polymer. The PtAg
2
entities are linked through O2 and O4 of the uracilato ligands,
